The Electric Potential in a Certain Region in Space Is $V ( x , y , z ) = x ^ { 2 } - y z$

Multiple Choice

The electric potential in a certain region in space is given by $V ( x , y , z ) = x ^ { 2 } - y z$ V. The electric field at the point (1.0 m, 0 m, -1.0 m) is

A) 2i + j N/m.
B) -2i - j N/m.
C) 2i N/m.
D) -2i N/m.
E) -2i - k N/m.