Simplify the following Boolean function F, together with the don't-care conditions d, and then express the simplified function in sum-of-minterms form: F(x, y, z) = sigma(0, 1, 4, 5, 6) d(x, y, z) = (2, 3, 7) F(A, B, C, D) = sigma(5, 6, 7, 12, 14, 15) d(A, B, C, D) = sigma(3, 9, 11) F(A, B, C, D) = sigma(4, 12, 7, 2, 10) d(A, B, C, D) = sigma(0, 6, 8)