Most points scored by 1 player on 1 play - 10/15/other?

[luvhoops]

Under NFHS rules, what are the most points that can be theoretically scored by one player on a single basketball play? Exclude repeated technical/intentional/flagrant fouls.

I was using Case book from 2008-2009. (case plays listed may be different in current books)

Based on (Multiple Foul) Case 4.19.11, it could be 10.
B1-B5 simultaneously foul A1 attempting an unsuccessful 3-point shot?
2x5 = 10

Based on (False Multiple Foul) Case 4.19.12, it could be 15.
B1-B5 foul A1, all at different times, attempting an unsuccessful 3-point shot?
3x5 = 15

For False Multiple Fouls, if it is always and only 2 shots for each foul, then it would be 10 and not 15.

Please confirm or disprove these thoughts. Looking for rule/case references only, not stuff like whether it could happen or anything along those lines.