已知曲线f(x)=ke﹣2x在点x=0处的切线与直线x﹣y﹣1=0垂直,若x1,x2是函数g(x)=f(x)﹣|1nx|的两个零点,则( )
A:1<x1x2< e
B:1e<x1x2<1
C:2<x1x2<2 e
D:2e<x1x2<2
已知数列{an}满足an﹣12=an2+4,且a1=1,an>0,则an=____
—Sure, ____ I am busy.