["A"]

1 minute at the front is far too long if you plan to stay with the pace line for the whole ride.
Killing yourself just trying to latch on to the tail end of the pace line after a long of a pull is why most people get dropped from the pace line.

High speed pace line work should be about maintaining the speed as a whole group; not how much or how long one can pull by each individual.
20-30 pedal strokes (less than 20 seconds with 90 rpm cadence) at the front of a pace line then get off is just riding smart, not hard.