Where does the next throw-in take place?

[Camron Rust]

To further add light to #2.

For the spot to be on the baseline, it would have to be a throwin violation. If that were the case (throwin caught OOB), any player from B could merely touch the ball OOB on the throwin (causing a throwin violation) and get the ball back. This is clearly not the intent of the rules.