选择题：Why did the boy look at the writer closely in the

Why did the boy look at the writer closely in the third paragraph?( )(本题1.5分)
A、 Because the writer looked down at the boy’s newspaper.
B、 Because the writer took a bit of chocolate on the table.
C、 Because the writer tasted the coffee by herself.
D、 Because the writer put chocolate on the table to keep a place.