NCAA Block/Charge Definition

[All_Heart]

This is from the NCAA Rule book pg 67

A.R. 7. (Women) B1 is standing directly under (a) the cylinder or (b) the backboard before A1 jumps for a layup. The forward momentum of airborne shooter A1 causes A1 to run into B1.

RULING: In both (a) and (b), B1 is not in a legal guarding position. Blocking foul on B1.

Could someone explain why this is a block? Where in the book (besides here) does it say that B1 is not in legal guarding position because she is under the basket? It says that this is a charge for Mens.

Here is the mens:

A.R. 6. (Men) B1 is standing under the basket before A1 jumps for a layup. The forward momentum of A1 causes contact with B1.

RULING: B1 is entitled to the position provided that there was no movement into such position by B1 after A1 leaped from the floor. When the ball goes through the basket before the contact occurs, the contact shall be ignored unless B1 has been placed at a disadvantage by being unable to rebound when the shot is missed or unable to put the ball in play without delay, when the try is successful. When the contact occurs before the ball becomes dead, a charging foul has been committed by A1. When B1 moves into the path of A1 after A1 has left the floor, the foul shall be on B1. It shall be an intentional foul when a player moves into the path of an airborne opponent with the intent to undercut and contact results. When the moving player moves under the airborne opponent and there is danger of severe injury as a result of the contact, it shall be a flagrant personal foul on the moving player.