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根据以下材料，回答题
CookingOilFumesCauseTumor
Theleadingcauseoflungcanceramongwomeninthecitywascookingoilfumeswhilemenaremorelikelytodevelopthediseasefromsmoking,saidmedicalexpertsafterafive-yearstudy.
Doctorsannouncedtheresultsyesterdaywithanalysisonsomenewtendenciesinlungcancer.
Theysaidpatientsareyounger,especiallywomen.
AccordingtotheShanghaiTumorResearchInstitute,morelocalresidentsdieoflungcancerinthecitythananythingelse．Followingbreastcancer,ithasthesecond-highestincidencerate.
"Anunhealthylifestyleisaveryimportantreasonforlungcancer,"saidDr．HeYuminfromShanghaiMinshenTraditionalChineseMedicineTumorDiagnosisandTreatmentCenter.
Hefollowed2,276lungcancerpatientsforfiveyears．Amongthem,1,483weremale.
Smokingcaused70percentofcasesamongmenwhileonly18percentoffemalepatientsdevelopedcancerfromsmokingorinhalingsecond-handsmoke,accordingtothereport.
However,morethan60percentofwomenwiththediseasehadlongterm,closecontactwithstrongoilfumesfromcookingandcomplainedaboutirritatedeyesandthroats.
About32percentofwomenfriedfoodsinboilingoilinunventilatedkitchensandabout25percentofwomen'sbedroomswereadjacenttothekitchen.
However,localwomenweresurprisedtolearncookingoilfumescouldleadtocancer．Someclaimedtheymaychangefoodpreparationmethods.
"UnlessmyfamilyandIdon'teatathomeeveryday,Imuststayinthekitchentocook,"saidXuLi,a45-year-oldlocalwoman．"Iknowthefumesarebadfortheskin,butitwasthefirsttimeIheardthatitcanresultinlungcancer．Ihavealreadystartedfryingless."
Doctorssaidwomen'slungcancerhadfewlinkstopersonalhealthandphysicalcondition,butwascloselyrelatedtofamilycancerhistory,unhealthydietaryhabitsandweakimmunesystems.
Otherexpertsagreedonit.
"Smokingisbyfarthebiggestcauseoflungcancerformen,"saidDr．TanBinyong,honorarypresidentoftheRespiratoryDiseaseInstituteatFudanUniversity'sMedicalCollege．"It'struethatsecond-handsmokeandcookingfumesarethemaincausesamongwomen."
Hisresearchalsowarnedpeoplenottostandnearstallssellingfriedfoodsduetothepoorqualityofoilsused.
Thechanceofcatchinglungcanceristhreetimeshigherifexposedtothefumesforalongtime,expertssaid.
Whatnewtendencyinlungcancerisconcludedbytheresearchers? A．Menaremorelikelytodeveloplungcancerthanwomen.
B．Womenaremorelikelytodeveloplungcancerthanmen.
C．Patientswithlungcancerbecomeolder,especiallymales.
D．Patientswithlungcancerbecomeyounger,especiallyfemales.
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