A.174.24.96:6088/Latex/latex.action?latex=XHN1bSBfe249MX1ee1xpbmZ0eSB9KC0xKV5udV9u'
B.
C.u
n+1≤u
n(n=1,2,…)
D.
![]()
E.174.24.96:6088/Latex/latex.action?latex=XGxpbSBfe25cdG8gXGluZnR5IH11X249MA%3D%3D'
F.u
n+1≤u
n(n=1,2,…),
![]()
G.174.24.96:6088/Latex/latex.action?latex=XGxpbSBfe25cdG8gXGluZnR5IH11X249MA%3D%3D'
H.
![]()
I.174.24.96:6088/Latex/latex.action?latex=XHN1bSBfe249MX1ee1xpbmZ0eSB9dV9u'