Phosphorus pentachloride decomposes to phosphorus trichloride at 250C^o according to the equation:

PCl5(g)=PCl3(g)+Cl2(gu)

at 250 C^o, 0.125M PCl5 is added to the flask, if Kc=1.80, what are the equilibrium concentrations of each gas?

A)[PCl5]=0.0625M,[PCl3]=0.0335M,and [Cl2]=0.335M

B))[PCl5]=1.80M,[PCl3]=1.80M,and [Cl2]=1.80M

C))[PCl5]=0 M,[PCl3]=1.34M,and [Cl2]=1.34M

D)[PCl5]=0.00765M,[PCl3]=0.117M,and [Cl2]=0.0.117M

E)[PCl5]=3.96M,[PCl3]=3.83M,and [Cl2]=3.83M