Given the Following Chemical Equilibrium
COCl₂(g) $\rightleftharpoons$ CO(g) + Cl₂(g), Calculate the Value of K_c when K_p

Given the following chemical equilibrium
COCl₂(g) $\rightleftharpoons$ CO(g) + Cl₂(g) , calculate the value of K_c when K_p = 6.5 × 10¹¹ at 298 K. (R = 0.08206 L?atm/mol ? K)

A) 1.5 × 10^-12
B) 3.8 × 10^-11
C) 1.1 × 10⁹
D) 2.7 × 10¹⁰
E) 1.6 × 10¹³