Multi-choice question: Same meaning?
In 219 , while Cao Ren was attacking Fancheng , Sun Quan agreed to send reinforcements to help the entrapped Guan Yu .
In 219 , while Cao Ren Fancheng was attacking , Sun Quan agreed to send reinforcements to help the enclosed Guan Yu .

Possible answers:
[A]. no
[B]. yes
[B].