The electric potential is \(300 \mathrm{~V}\) at \(x=0 \mathrm{~cm}\), is \(-100 \mathrm{~V}\) at \(x=5 \mathrm{~cm}\), and varies linearly with \(x\). If a positive charge is released from rest at \(x=2.5 \mathrm{~cm}\), and is subject only to electric forces, the charge will

A. Move to the right.

B. Move to the left.

C. Stay at \(x=2.5 \mathrm{~cm}\).

D. Not enough information to tell.