For the Second-Order Reaction Below,the Initial Concentration of Reactant a Is

For the second-order reaction below,the initial concentration of reactant A is 0.24 M.If the rate constant for the reaction is 1.5 × 10^-2 M^-1s^-1,what is the concentration of A after 265 seconds? 2A → B + C
Rate = k[A]²

A) 0.12 M
B) 0.19 M
C) 0.95 M
D) 4.0 M
E) 5.2 M