In the Figure, If Q = 30 $\mu$ C, Q = 50

Multiple Choice

In the figure, if Q = 30 $\mu$ C, q = 5.0 $\mu$ C, and d = 30 cm, what is the magnitude of the electrostatic force on q?

A) 15 N
B) 23 N
C) zero
D) 7.5 N
E) 38 N