已知等差数列{an}满足a1+a2+a3+…+a101=0,则有( ) A.a1+a101＞0 B.a2+a100＜0

设公差为d
则a1+(a1+d)+(a1+2d)+...+(a1+100d)
=101a1+101*50d=0
a1+50d=0
故a51=a1+50d=0
A.a1+a101=2a1+100d=2(a1+50d)=0不合
B.a2+a100=a1+a+a1+99d=2(a1+50)=0不合
C.a3+a99=0符合
D.不合
选C