What Would Be the Reaction Quotient for the Reaction $2 \mathrm {~A} ( g ) f \quad 2 \mathrm {~B} ( g ) + \mathrm { C } ( g )$

Multiple Choice

What would be the reaction quotient for the reaction $2 \mathrm {~A} ( g ) f \quad 2 \mathrm {~B} ( g ) + \mathrm { C } ( g )$ if the pressure is decreased by a factor of 2 at constant temperature?

A) $Q = \frac { 1 } { 4 } K$
B) $Q = 2 K$
C) $Q = \frac { 1 } { 2 } K$
D) $Q = 4 K$
E) $Q = K$