An Object Is Being Acted Upon by Three Forces and Moves

Multiple Choice

An object is being acted upon by three forces and moves with a constant velocity. One force is 60.0 N along the x-axis, the second is 75.0 N along a direction making a counterclockwise angle of 150.0° with the x-axis. What is the magnitude of the third force?

A) 37.8 N
B) 62.4 N
C) 67.5 N
D) 130 N
E) 135 N