A flat rail road car is accelariting along the positive x-axis with an acceleration `a_(p)`. A sphere is placed over the car. The friction between the car and the sphere is not sufficent to support pure rolloing of sphere. The correct statement is
A. The sphere will slip and force of friction on sphere is along -x direction
B. The sphere will slip and force of friction on sphere is along +x direction
C. Acceleration of sphere is along -x direction
D. None of the above
