Ответ:

A

Пошаговое объяснение:

5^x = 27 -> x = log(5,27) = 3*log(5,3)

3^y = 125 -> y = log(3,125) = 3*log(3,5)

x*y = 3*3*log(5,3)*log(3,5) = 3*3*log(5,5)*log(3,3) = 9