选择题
2011 AMC 8 Problem 17: Prime Factor Exponents
Let w, x, y, and z be whole numbers. If 2^w · 3^x · 5^y · 7^z = 588, then what does 2w + 3x + 5y + 7z equal?
A.
21
B.
25
C.
27
D.
35
E.
56