If two forces magnitude F each are acting in the Cartesian coordinate and are acting at the points A(3,3) and B(-3,3). They are heading towards negative z direction and positive z direction respectively. The distance between them is given as r. The radius vectors of the force at A and B are Ra and Rb respectively. Then the moment is given as:a) (Ra-Rb).Fb) (Rb-Ra).Fc) (Ra-Rb)xFd) (Rb-R

• A. (Ra-Rb).Fb) (Rb-Ra).Fc) (Ra-R
• B. .Fb) (Rb-Ra).F
• C. (Ra-Rb)xF
• D. (Rb-Ra)xF