34. Create the Kmaps and then simplify for the following functions (leave in sum-of-products form):

a) F(w, x, y, z) = w′x′y′z + w′x′yz′ + w′xy′z + w′xyz + w′xyz′ + wxy′z + wxyz + wx′y′z

b) F(w, x, y, z) = w′x′y′z′ + w′z + w′x′yz′ + w′xy′z′ + wx′y

c) F(w, x, y, z) = w′x′y′ + w′xz + wxz + wx′y′z′