Find a minimum two-level, multiple-output AND-OR gate circuit to realize these functions (eight gates minimum). (Enter the minimal logical expressions. Use the following as necessary: a,b,c,d.) f1?(a,b,c,d)=?m(10,11,12,15)+?d(4,8,14)f2?(a,b,c,d)=?m(0,4,8,9)+?d(1,10,12)f3?(a,b,c,d)=?m(4,11,13,14,15)+?d(5,9,12)f1?(a,b,c,d)=f2?(a,b,c,d)=f3?(a,b,c,d)=? Draw the circuit diagrams for expressions above. (Submit a file with a maximum size of 1MB. Submissions will be graded by your instructor after the due date based on its accuracy. Your grade may change.)