下列各式中正确的是( )。x→0+lim(1+x1)x=1x→0+lim(1+x1)x=ex→∞lim(1−x1)x=−ex→∞lim(1+x1)−x=eAx→0+lim(1+x1)x=1正确答案Bx→0+lim(1+x1)x=eCx→∞lim(1−x1)x=−eDx→∞lim(1+x1)−x=e