#Gatebook Qno-16 [closed]

Question

L = {B(N)#B(N+1) : B(N) represents binary pattern for given N. Example B(5)=101, N>=1}. Then which of the following is true for L?

(A). L is regular

(B). L is CFL but not regular

(C). L is Recursive but not CFL

(D). L is recursive enumerable but not recursive