对于给定的正态总体N(μ，σ²)(σ²未知)的一个样本(X₁，X₂，…，X_n)，则期望μ的置信区间选用的统计量服从(    )
   A．t分布    B．分布    C．U分布    D．F分布

A.B.174.24.96:6088/Latex/latex.action?latex=XGxpbV97eOKGklxmcmFje8%2BAfXsyfX1cZnJhY3tcY29zeH17eC1cZnJhY3vPgH17Mn19PTE%3D'
C.D.174.24.96:6088/Latex/latex.action?latex=XGxpbV97eOKGkuKInn14XHNpblxmcmFjezF9e3h9PTE%3D'
E.F.174.24.96:6088/Latex/latex.action?latex=XGxpbV97eOKGkjB9XGZyYWN7XHRhbnh9e1xzaW54fT0x'
G.H.174.24.96:6088/Latex/latex.action?latex=XGxpbV97eOKGkjB9XGZyYWN7XHNpbihcdGFueCl9e3h9PTE%3D'

A.174.24.96:6088/Latex/latex.action?latex=XGZyYWN7XHBhcnRpYWwgZn17XHBhcnRpYWwgeH1cbWlkIF97XGJlZ2lue2FycmF5fXtjfXg9Mlxc%0D%0AeT0wXGVuZHthcnJheX19'
B.

C.0
D.2
E.-1