Yeah, I was trying to make the point that the penalty for the illegal block is 10-yards, and it is a spot foul, by rule. So, Team A would accept the penalty, to have the ball taken to the B-20, since the natural result of the down would, in fact, be B’s ball at the B-25.
I didn’t write the question as well as I should have, because I didn’t give an actual spot for the foul. Y’all had to ‘assume’ the foul was at the B-30, and we shouldn’t make people guess or assume such facts. Sorry about that.