[不恥下問系列]又有GMAT數學題不懂之11

which of the following is eauql to the value of
2^5 + 2^5 + 3^5 + 3^5 + 3^5

a) 5^6
b) 13^5
c) 2^6+ 3^6
d) 2^7 + 3^8
e) 4^5 + 9^5

THX