erfly6 which antenna?

hi, i have sucessfully flashed erfly6 on my fsi6. previously i had flashed the flyplus which gives more channels and switches. also i had choosen from the factory menu the antenna 2 for usage and modified an external one. so my question is...which antenna, from the 2 available, erfly6 uses in order to route the external wire to the correct connector on the pcb.