why did Mr.Rochester say ..and the you stab me in the back! the (7thpara.?A: because

why did Mr.Rochester say" ..and the you stab me in the back!" the (7thpara.？

A: because Jane had intended to kill him with a knife

B: because Jane had intended to be more critical.

C: because Jane had regretted having talked to him

D:because Jane had said something else to correct herself.

请帮忙给出正确答案和分析，谢谢！