Two Point Charges of + 30 $\mu$ C and - 900 $\mu$

Two point charges of + 30.0 $\mu$ C and - 9.00 $\mu$ C are separated by a distance of 20.0 cm. A +7.00 $\mu$ C charge is placed midway between these two charges. What is the electric force acting on this charge because of the other two charges?

A) 2.45 N directed towards the positive charge
B) 0.453 N directed towards the negative charge
C) 245 N directed towards the positive charge
D) 245 N directed towards the negative charge
E) 2.45 N directed towards the negative charge