In the following six electronic configuration (remaining inner orbital are completely flled). Mark the correct optio(s).
A. Order of spin multiplicity : `C-IIgtC-I=C-IIIgtC-IV`
B. Stabiltiy order : `C-IIgtC-I & C-IVgtC-III`
C. If `C-V` represents element A then `A^(2+)` acts as diamagnetic.
D. `C-VI` violates all the three ruls of electron configuration