Could you make it as a Chair or Line Umpire?

1. If a ball touches the top of the net post and goes into court, is the ball still in play?  "YES" or "NO"

2. Player A’s cap falls off during the point. Earlier in the match, a ball had fallen out of Player A’s pocket for the first time during play and an involuntary hindrance was called. What is the correct decision?
A. Replay the point
B. Replay the point and advise Player A that if something like that happens again, he/she will lose the point
C. Player A loses the point

3. In a doubles match, a ball passes through a hole inside the net post and under the net cord without touching either. Does play continue if the ball lands in the correct court?    "YES" or "NO"