A:what the baby giraffe likes eating
B:when the baby giraffe was born
C:why the baby giraffe looks unhappy
D:where the baby giraffe came from
下列说法正确的是( )
已知双曲线 x2a2−y2b2=1 (a>0,b>0)的一个焦点为F1(0,﹣c)(c>0),离心率为e,过F1平行于双曲线渐近线的直线与圆x2+y2=c2交于另一点P,且点P在抛物线x2=4cy上,则e2=( )