4th Down Intentional Grounding Enforcement

[BoBo]

Help clear this up for me. High School Rules

4th and 10 on A's 40 and A's Ball

PLAY- A1 goes to pass and while rushed intentionally grounds the ball. The pass is made from A's 35.

RESULT- B declines and 1st down at A's 40
B accepts and 1st down at A's 30 (5 yard penalty from the spot and loss of down)

COMMENT- Generally an accepted penalty can not cause a change of possession. But in this case A has forfeited this right when intentionally grounding the pass and giving up the series on downs.

Right-Wrong-Little of Both??????