Which statement correctly describes the effect of a catalyst on the equilibrium below?

\[{{\text{N}}_{\text{2}}}{\text{(g)}} + {\text{3}}{{\text{H}}_{\text{2}}}{\text{(g)}} \rightleftharpoons {\text{2N}}{{\text{H}}_{\text{3}}}{\text{(g)}}\]

A.     It increases the rates of both forward and reverse reactions equally.

B.     It increases the rate of the forward reaction but decreases the rate of the reverse reaction.

C.     It increases the value of the equilibrium constant.

D.     It increases the yield of \({\text{N}}{{\text{H}}_{\text{3}}}\).

A