I have been asked this question by my school principal while I was bunking the class.
My doubt is from Frictional Forces on Collar Bearing, Pivot Bearings and Disks in chapter Friction of Engineering Mechanics
Explanation: The coplanar forces can be easily simplified in the simplification of the force and couple system. This is not only for the coplanar system of the forces but for any of the dimension vector. Which means the answer is false.