Calculate fx (x, y, Z). f (x, y, z) = In(4x2 + 2yz - 3z) Z a) Ofx = 4 x2 + 2 yz - 3 z2 2 yz - 3z2 +8x b) Ofx = 4 x2 + 2 yz - 3 z2 X c) Ofx = 2 4 x2 + 2 yz - 3z2 Z d) Ofx = 2 4 x2 + 2 yz - 3z2 X e) Ofx = 8 4 x2 + 2 yz - 3 z2 f) O None of these