SwingsitlikeHogan
Major Champion
We dont do honour after the 1st in our own group
If im wth strangers i will abide by it unless told it ok to do otherwise
To answer OP i would say BAC.. A loses honour to player B's 4 but as player C only matched his score he is still ahead of him .
Common misconseption is lowest handicap tees off first on 1st tee .
for me this is true for comps where player are named on the sheet - first named on sheet goes first; second, second; third, third
In casual/roll-up golf we play lowest handicap first