The three men tried many times to sneak across the border in

The three men tried many times to sneak across the border into the neighboring country,.
The three men tried many times to sneak across the border into the neighboring country,___ by the police each time.
A.had been captured B.being always captured?
C.only to be captured D.unfortunately captured
.我想知道其他选项为什么不行谢谢.