IAABO Exam

[BillyMac]

I've been to four IAABO refresher exam meetings, sessions, clinics, etc. and I am still not satisfied with the answer to question #80:

With 3/10's of a second or less on the game clock, B-1 attempts to catch A-1's throwin. Simultaneously, A-2 from behind B-1 taps the ball from B-1's hands. After the ball leaves A-2's hand, time expires. Ball enters basket. Official disallows the basket. Is the official correct?

Answer Sheet: No; Citation 5-2-5

I don't believe that there's enough information to answer the question correctly, doesn't it depend on which basket the ball enters, A's or B's, information which is not given in the question?

If the ball enters A's basket, the answer no is correct, the official should have allowed the goal, but if the ball enters B's basket, it's not a legal try and the expiration of time causes the ball to become dead, which means the official was correct in disallowing the goal.

Help???