In a sealed container, substance A is in equilibrium with substance B according to A(g) ⇌ B(g), where Kc = 2.0 at the temperature of the experiment. A slow side reaction converts some B into a third species C, but particles of C do not participate in the equilibrium above and should be ignored when evaluating whether the mixture is at equilibrium. Which particle diagram below is most consistent with the stated value of Kc?
a) 6 A molecules, 3 B molecules, 2 C molecules
b) 4 A molecules, 6 B molecules, 0 C molecules
c) 3 A molecules, 6 B molecules, 4 C molecules
d) 4 A molecules, 4 B molecules, 2 C molecules