Minimize the following Boolean functions using K-maps: a) a,b,c)= f (a,b,c,d)= (2, 3, 6, 7, 12, 13, 14) f (a, b, c) = (0, 3, 4, 7) f (a,b,c,d)= (1, 3, 4, 5, 6, 7, 9, 11, 13, 15) f (a,b,c,d)= (0, 2, 4, 5, 6, 7, 8, 10, 13, 15) f ( (2, 3, 6, 7) b) c) d) e)