Brad wrote this code for an fintech startup. What do you expect Brad's code to do when the payAmt method is called via a Spring AOP proxy (you can assume that Brad has already enabled @Transactional annotation support).
Transactional annotation image
A: Calling the add() method throws an exception.
B: add() method executes code in a new transaction.
C: add() method uses the transaction of the payAmt() method.
D: None of these