If n is the product of the integers from 1 to 20 inclusive, what is the greatest integer k for which 2^k is a factor of n?
A. 10
B. 12
C. 15
D. 18
E. 20
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提问:
请问这题中“explore”的动发者为什么是“Lina”呢?我在读A选项时总觉得选项中explore的动发者是“A group of films” 因为觉得explore前面的主体是“A group of films”, 而 in 1970 和 Lina 都是修饰films的。