单项选择题

A.ΔrGm(1)0=2ΔrGm(2)0,K10=K20
B.ΔrGm(1)0=2ΔrGm(2)0,K10=(K202
C.ΔrGm(1)0rGm(2)0,K10=(K202
D.ΔrGm(1)0rGm(2)0,K10=K20