题目内容：
Book Talk and SigningThursday, June 9,6:30 P.M.: Anthony Wang: Closter Union's Marble Hall17 East 27th Street at Third Avenue
A fascinating biography, The Hand That Fed the City, details the achievements of50mayor Katherine Simpson, the charismatic leader who established herself as the "City's Champion" in the economic stagnation of twenty years ago. Anthony Wang will discuss highlights from the51, fo-cusing on how Simpson convinced investors to move to the city by providing radical tax exemptions for new businesses52financial and for small enterprises. Wang's talk will conclude with a look at how Simpson's successor, current mayor Samuel Zimmerman, has handled her legacy.
阅读以上短文，回答题。
第50题答案是__________ A．former
B．back
C．before
D．early
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