Which of the following is a correct Prolog definition of Z being W's aunt? a. aunt(2,W):-sibling(Y,Z), parent(2,W),female(Z).b. aunt(Z,W):-sibling(Z,Y), parent(2,W),female(2). c. aunt(Z,W):-sibling(W.Y), parent(Y,Z), female(Z). d. aunt(Z.W):-sibling(Z.Y), parent(Y,W),female(Z). e. aunt(Z.W):-sibling(W.Y), parent(X,Y),female(2).