Let g be the acceleration due to gravity at the earth's surface and K the rotational kinetic energy of the earth. Suppose the earth's radius decreases by 2%. Keeping all other quantities constant, then

Options

A. g increases by 2% and K increases by 2%
B. g increases by 4% and K increases by 4%
C. g increases by 4% and K increases by 2%
D. g increases by 2% and K increases by 4%