At 850°C, the Equilibrium Constant K_p for the Reaction C(s)

At 850°C, the equilibrium constant K_p for the reaction C(s) + CO₂(g) ⇄ 2CO(g)
Has a value of 10.7. If the total pressure in the system at equilibrium is 1.000 atm, what is the partial pressure of carbon monoxide?

A) 0.362 atm
B) 0.489 atm
C) 0.667 atm
D) 0.915 atm
E) 0.921 atm