If $A$ and $B$ are square matrices of the same order and A is non-singular then for a positive integer n,$(A^{-1}BA)^n$ is equal to

Question

$\begin{array}{1 1}(A)\;A^{-n}B^nA^n&(B)\;A^nB^nA^{-n}\\(C)\;A^{-1}B^nA&(D)\;n(A^{-1}BA)\end{array}$