Calculate fz (x, y, Z). f (x, y, z) = In X - 4 ye2 xz a) Ofz = -8 yxe2 xz b) Of z = x-+ 8 yxe2 xz c) Ofz = -yl - 42 xz d) Ofz = In - - 8 yxe2 xz e) Ofz = In + x-1 - 8yze2 xz f) O None of these