如果银行的总资产为1000亿元，总存款为800亿元，核心存款为200亿元，应收存款为10亿元，现金头寸为5亿元，总负债为900亿元，则该银行核心存款比例等于( )。

A．0.1

B．0.2

C．0.3

D．0.4

At year-end , Sun company reported cost of goods sold of $ 400 million. Ending accounts payable is $100 million, Assuming there are 365 days in a year, How many days on average it takes Sun company to pay its suppliers.（）

A．80.75 days

B．91.25 days

C．102.25 days