For S ? (0+1)* Let D(s) Denote the Decimal Value

Multiple Choice

For s ? (0+1) * let d(s) denote the decimal value of s(e.g.d(101) ) = 5 Let L = {s ? (0+1) * d(s) mod 5=2 and d(s) mod 7 != 4} Which one of the following statements is true?

A) L is recursively enumerable, but not recursive
B) L is recursive, but not context-free
C) L is context-free, but not regular
D) L is regular