Question

How are N2, CN-, and CS alike? Mark all of the following that are true.
All 3 chemical species have a (the)...

A. same overall formal charge.
B. same number of valence electrons.

A. bond order of 3.
B. double bond.

A. sigma p HOMO.
B. sigma p * (star) HOMO.

A. pi p LUMO.
B. pi p * (star) LUMO.

A. completely filled degenerate pi p orbitals (2e- in each orbital).
B. singly filled degenerate pi p orbitals (le- in each orbital).

A. singly filled degenerate p orbitals (le- in each orbital).
B. empty degenerate pi p orbitals (no e- in orbitals).
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So far, I believe it has
same number of valence
Bond order of three

But after that I get completely lost. Can someone please help and explain their thought process