How would you remedy a conflict between Anti-Spoofing and NAT?

How would you remedy a conflict between Anti-Spoofing and NAT?

A.
By adding the translated, external IP address to the Valid Addresses on the external interface

B.
By removing die translated, external I? address to the invalid Addresses on the internal
interface

C.
By adding the translated external IP address to the Valid Addresses on the internal interface

D.
Reinstall NAT rules

E.
Do nothing