I knew nothing of the motives behind his recent move, and I don't know either the person to put him up to the action.

A．nor did I know ... who

B．not did I know ... that

C．nor do I know ... that

D．either did I know ... who

下列等式中正确的有( )。

A．期初余额=本期增加发生额+期末余额-本期减少发生额

B．期末余额=本期增加发生额+期初余额-本期减少发生额

C．期初余额=本期减少发生额+期末余额-本期增加发生额

D．期初余额=本期增加发生额-期末余额-本期减少发生额