An Increase in the Number of Moles of Gas as the Reaction

An increase in the number of moles of gas as the reaction goes from reactants to products in a gas-phase equilibrium results in ________

A) K_p > K_c.
B) K_p < K_c.
C) K_p = K_c.
D) K_p + K_c = (RT) ^{$\Delta$ n}.
E) K_pK_c = (RT) ^{$\Delta$ n}