Please note, Keyboard Sensitive system.

Include a clear detailed solution with the formulas used in each step.

make sure that your answer is accurate in a standard form and in scientific notation as well.

9. Two small charged objects repel each other with a force F when separated by a distance d. If the charge on each object is reduced to one-fourth of its original value and the distance between them is reduced to d/2 the force becomes: A) F/16 B) F/8 C) F/4 D) F/2 E) F