不等式（x²-2x-3）（x²+1）＜0的解集为（　　）

A．{x|-1＜x＜3}

B．{x|x＜-1或x＞3}

C．{x|0＜x＜3}

D．{x|-1＜x＜0}

I thought we'd be late for the concert, _____ we ended up getting there ahead of time. [ ]

A. but

B. or

C. so

D. for