单选题-对正常人血糖水平无影响的药物是
A、格列本脲
B、格列齐特
C、阿卡波糖
D、二甲双胍
E、胰岛素

A．the value of the firm's equity.
B．the market value of the firm's assets.
C．the value of the firm's unlevered equity.
D．the value of the firm's debt.