(1) In 235 BC , after an attack on the state of Zhao , troops united from the states of Qin and Chu Wei attacked , but suffered a defeat .
(2) In 235 BCE , after an attack on the State of Zhao , troops from the states of Qin and Wei united to attack Chu but suffered a defeat .

Do these two sentences mean the same thing?

pick from the following. A. no; B. yes;
A.