An exponential function is given by the equation f (x) = 10 . 1/15x². does the function represent growth or decay?

A.the function represents exponential growth because the base equals 15.
B.the function represents exponential decay because the base equals 1 over 15.
C.the function represents exponential decay because the base equals 15.
D.the function represents exponential growth because the base equals 1 over 15.