For the Reaction Given Below,2

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) C(g)
At equilibrium,the concentration of A is 0.213 mol/L.What is the value of K?

A) 2.18
B) 1.79
C) 0.213
D) 8.40
E) 0.565