Enforcement of multiple unsportsmanlike or nonplayer foul on touchdown
 

NFHS rules
R.8-2-4
An unsportsmanlike conduct or nonplayer foul which occurs during a down in which a touchdown is scored may be enforced on the try or on the succeeding kickoff.

R. 10-2-5a. Enforcement of live-ball unsportsmanlike, and nonplayer fouls are administered separately and in order of occurrence.

Situation: B recovers A's fumble and runs for a touchdown. During the run, prior to the touchdown, B commits two unsportsmanlike fouls. The touchdown will count, and A will have the option of enforcement on the try or succeeding kickoff. May A enforce one penalty on the try and the second on the succeeding kickoff? Or must they both be enforced at the same time?

I haven't seen this particular play. "Simplified and Illustrated" page 212, shows a similar situation, but no enforcement guidance. I haven't located a case book item yet. Can anyone direct me toward a citation for this type of situation?
Thanks,

Those case plays are in Rule 8. However, there is no case play directly on point for multiple USC's on the scoring play so you cobble together from Rule 8 and 10. Both may be enforced either/or.

Thanks, HLin!