问答题

平面和柱面x2+y2=1的交线上与Oxy平面距离最短的点的坐标为(    ).
   A.()    B.()
   C.()  D.()

A.174.24.96:6088/Latex/latex.action?latex=XGZyYWN7eH17M30rXGZyYWN7eX17NH0rXGZyYWN7en17NX09MQ%3D%3D'
B.

C.(D.174.24.96:6088/Latex/latex.action?latex=XGZyYWN7M317NX0sXGZyYWN7NH17NX0sXGZyYWN7MzV9ezEyfQ%3D%3D'
E.(F.174.24.96:6088/Latex/latex.action?latex=XGZyYWN7NH17NX0sXGZyYWN7M317NX0sXGZyYWN7MzV9ezEyfQ%3D%3D'
G.(H.174.24.96:6088/Latex/latex.action?latex=LVxmcmFjezN9ezV9LC1cZnJhY3s0fXs1fSxcZnJhY3s4NX17MTJ9'
I.(J.174.24.96:6088/Latex/latex.action?latex=LVxmcmFjezR9ezV9LC1cZnJhY3szfXs1fSxcZnJhY3s4NX17MTJ9'
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