Yesterday was my birthday.  My friend sent me a CD              is made by Han Geng.

A．who

B．what

C．which

D．whom

T与B淋巴细胞淋巴瘤基因诊断方法中错误的是（）

A.Southern印迹杂交

B.Northern印迹杂交

C.多聚酶链反应（PCR）扩增技术

D.反转录PCR

E.Western印迹杂交