Thief dances in front of camera

Surveillance footage from a shop in Yangzhou, Jiangsu province shows exuberant thieves dancing in front of surveillance cameras, instead of hiding from them. In the video, a thief danced for a bit in front of the surveillance camera before he and his companion burst into the shop at about 3 am. Then the other thief kicked the door open and stole a laptop, some change and the cash box.

請聽音頻并回答問題：

When did the thieves burst into the shop?

A. 3 am

B. 3 pm

C. 4 am

（中國日報網英語點津 江巍 編輯）