Help with Alternator Install

I drove my 65 Dart home from the shop that installed a new 318. It ran fine but when I parked it wouldn't start. The green wire for the alternator was disconnected. I had the battery and alternator tested and the alternator failed. I now have a new alternator but I don't know which of the two terminals (A and B in my photo) the green wire goes on.

Alternator Contacts.jpg

Alternator.jpg