Every time I try to give Virgil the serum he asked for, it doesn't give me the option even though I have it. It shows the “A” option but no text beside
Fallout 4 Virgil's Serum Location (Commentary) Xbox One 1080p HD - YouTube
Fallout 4: Virgil's Serum Location
Le sérum de Virgil - Soluce Fallout 4 | SuperSoluce