TTGWD9-34一直认为是B,为什么是C

Q34:

What is the value of the integer n?

(1)     n(n + 2) = 15

(2)     (n + 2)ⁿ = 125

一直认为是B,为什么是C

vote for B

(1) -5*(-5+2)=15  3*5=15   n=3 or -5

(2) (3+2)^3=125   n=3

couldn't think up some other possible n, need to be updated, thx