The incorrect statements among the following is/are
(I) `NCl_5` does not exist while `PCl_5` does (II) Lead prefers to form tetravalent compounds in the carbonate ion (III) The three C-O bonds are not equal in the carbonate ion (IV) Both `O_2^(+)` and NO one paramagnetic
A. I,III, and IV
B. I and IV
C. II and III
D. I and III