现金头寸指标越高，意味着商业银行有较好的流动性。该指标的计算公式为（）。

A．(现金头寸+应收存款)÷总资产

B．现金头寸÷总资产

C．现金头寸÷总负债

D．(现金头寸+应收存款)÷总负债

She has worked at the bank for many years，nine ______.

A．generally speaking

B．believe it or not

C．to be exact

D．to be honest