Consider the Boolean function, F(w, x, y, z) = wy + xy + w̅xyz + w̅ x̅ y + xz + x̅y̅z̅.
Which one of the following is the complete set of essential prime implicants?
(A) w,y,xz,x̅z̅
(B) w,y,xz
(C) y,x̅y̅z̅
(D) y,xz,x̅z
After constructing the KMAP by finding out minterms, the circled terms contribute to Essential prime implicants, but i dont' see any such options, the Answer is given D