Identify the HOMO and the LUMO That Participate in the Following

Identify the HOMO and the LUMO that participate in the following reaction.

A) HOMO = nb orbital on ^- CNLUMO = σ* orbital on CH₃Br
B) HOMO = π orbital on ^- CNLUMO = π* orbital on CH₃Br
C) HOMO = π orbital on CH₃BrLUMO = nb orbital on ^- CN
D) HOMO = nb orbital on CH₃BrLUMO = π* orbital on ^- CN
E) HOMO = π orbital on ^- CNLUMO = σ* orbital on CH₃Br