At 25 $\degree$ C, the Equilibrium Constant K_c for the Reaction 2A(aq)

Multiple Choice

At 25 $\degree$ C, the equilibrium constant K_c for the reaction 2A(aq) B(aq) + C(aq) is 65. If 2.50 mol of A is added to enough water to prepare 1.00 L of solution, what will the equilibrium concentration of A be?

A) 0.038 M
B) 0.14 M
C) 0.28 M
D) 1.18 M
E) 2.4 M