If the force exerted by a man is halved and the distance is multiplied by four, by which factor does the work change ? A. Increase by a factor of 8
B. Decrease by a factor of 2
C. Increase by a factor of 2
D. Increase by a factor of 4

I don’t know the answer honestly sorry

You would need to take a picture so i can see

The answer is 4f======since electrostatic force is given by    we let f be the electrostatic force when  r = 1 m    if we let  denote the electrostatic force when the distance is decreased so that r = 0.5m, then    we established earlier that f = kq₁q₂. therefore    the force will now be 4f.