NFHS 4.7.2c

[rsl]

In a tie game with less than a minute remaining, A1 drives toward the basket. B1 and B2 stand next to each other, with their nearest feet separated by about a foot. A1 attempts go between B1 and B2, and as he straddles B2's leg, B2 gives him a hip check and causes him to lose the ball out of bounds.

What is the call?

Based on 4.7.2c, I chose a no call on the foul and gave B the ball. But, even though 4.7.2c, gives A1 the greater responsibility for the contact, there is still contact by B2 on the ball handler.

It was not a well received call, so I thought I would ask you guys. When a ball handler dribbles into close quarters, how much is "greater responsibility"?