For the Reaction Given Below, 2 $\rightleftharpoons$ C(g)
at Equilibrium, the Concentration of a Is 0

For the reaction given below, 2.00 moles of A and 3.00 moles of B are placed in a 6.00-L container. A(g) + 2B(g) $\rightleftharpoons$ C(g)
At equilibrium, the concentration of A is 0.230 mol/L. What is the value of K_c?

A) 1.20
B) 1.53
C) 5.22
D) 0.230
E) 0.449