—I didn't know which T-shirt was ____, so I took them both.

—Yes, it's really difficult to choose. [ ]

A. better

B. well

C. best

D. good

以两个等值但题目不同的测验来测量同一群体，求其两者得分的相关性，被称为( )。

A．内部一致性信度

B．重测信度

C．复本信度

D．评分者信度