建设单位从银行贷款1000万元，贷款期为2年，年利率6%，每季度计息一次，则贷款的年实际利率为（）。

A、6%

B、6.12%

C、6.14%

D、12%

---I rang you yesterday afternoon. A man answered, but I didn’t recognize the voice.

--- Oh, it ____ my uncle. He was in my room then.

A．must have been

B．should have been

C．must be

D．should be