Answer the following questions related to the function f(A, B, C, D) as defined by its minterms:
f(A, B, C, D)= ∑m(7,9,11,12,13,14,15)
(a) Enter the minterms and maxterms on a suitable K-map and deduce the minimal 2ⁿᵈ canonical form
for f(A, B, C, D)