Use K- map to reduce the cost of POS an SOP forms for these functions: a) F(x1,,xs)=M(1,4,6,7,9,12,15,17,20,21,22,23,28,31) (POS only) b) F(x1,,x5)=m1(0,1,3,4,6,8,9,11,13,14,16,19,20,21,22,24,25)+ m2(5,7,12,15,17,23) (SOP only)