After breaking up with his girlfriend, a 14-year-old boy decided to break into her house to recover a ring he had given her as a present. He took a screwdriver with him to force open the back door. Once Inside, he walked through the kitchen but was confronted by the girt's father. In a panic, the boy stabbed the girt's father with the screwdriver.If the boy is prosecuted for aggravated burglary, which of the following would be his best defence?
选项：

A:The boy is a child, and only adults can be prosecuted for aggravated burglary
B:The boy did not have a chance to take back the ring from the girl, so he did not complete the offence.
C:The boy was recovering an item that was his as he had given it to his ex-girt friend.
D:The father provoked the boy by confronting him.
E:The boy had no intention of using the screwdriver as a weapon when he entered the house.