Use Karnaugh maps to simplify the following Boolean functions expressed in the sum of

minterms. Please clearly show your Karnaugh maps, circling, and place your final Boolean

equation on the line provided.

a$)3$ Variables: $A(x,y,z)=m1+m2+m4+m7$

b$)3$ Variables: $B(x,y,z)=m0+m3+m4+m5+m6+m7$

C$)4$ Variables: C $($W$,$X$,$Y$,$Z$)=(1,2,5,6,13,14,15)$

D$)4$ Variables: D $($W$,$X$,$Y$,$Z$)=(2,3,10,11,13,14,15)$