TheGreatGazoo

Hi im new here, i have a 1969 roadrunner convert 440 that i owned for 15 years. i'm replacing the gas tank i have a question which port do i hook the gas tank vent tube that goes up into the trunk then ends in the pass side frame rail. i have 3 ports. 1 on the sender next to the pickup tube, and 2 on the upper driver side of the gas tank. i will call them a,b,c.
A- the one on the on the sender sw.
B- the next one closest to the sender on the tank
C- the one 1 inch away from B but the furthest away from the sender

any help would be awesome