Set Reverse Record on ENS?

Hi, I had a few specific questions about .eth domains and was wondering if anyone could answer them.

I wanted to set my reverse record from one .eth domain (domain A) to another (domain B), but when I go to select my ENS name there is only one option. Does this mean that only transactions sent to domain A will work? Or can I receive crypto with any of the domains I own?

Thank you!