Let M be a Kripke Structure with W = {a,b,c,d}, I(p) = {b,c,d}, J(A) = {(a,b),(b,c),(c,d)}, J(B) = {(b,a),(c,b),(d,c)}. What is the value of (B | A) controls p?

A.) W

B.) {b,c,d}

C.) {a,b,c}

D.) {b,d}