Digital Circuits Design

Show work and please help me. Thank you

2. Simplify the following Boolean functions using 4-variable maps. One of the functions might have been simplified. (a) F(A,B,C,D) = (0,1,2,5,8,9,10,13,14) (b) F(A,B,C,D) = (1,3,4,5,10,12,13,15) (c) f(a, b, c, d) = acd + ab + cd' + a'b'cd (d)f(w, x, y, z) = xZ + wxyz + wyz' + xy