What do we know about Serena Ravenell?
A. She is the only woman in her unit.
B. She has many relatives in her unit.
C. She thinks mothers' care is important to children.
已知某商业银行的总资产为1000亿元,总负债为800亿元,资产加权平均久期为6年,负债加权平均久期为4年,那么该商业银行的久期缺口等于()。
A. 1.5
B. -1.5
C. 2.8
D. 3.5