Statement -1: $\sum^{n}_{r=0}(r+1)^nC_r=(n+2)2^{n-1}$ <br> Statement -2: $\sum^{n}_{r=0}(r+1)^nC_rX^r=(1+X)^n+nX(1+X)^{n-1}$

Question

( A ) Statement -1 is true, Statement -2 is true, Statement -2 is a correct explanation for Statement -1
( B ) Statement - 1 is true, Statement - 2 is false
( C ) Statement -1 is false, Statement -2 is true
( D ) Statement -1 is true, Statement -2 is true; Statement -2 is not a correct explanation for Statement -1.