函数y=-e^x的图象 [ ]

A、与y=e^x的图象关于y轴对称　　　　　

B、与y=e^x的图象关于坐标原点对称

C、与y=e^-x的图象关于y轴对称　　　　

D、与y=e^-x的图象关于坐标原点对称

—Is this room ______?

—Yes, it's ______. [ ]

A. Lily and Lucy; their

B. Lily's and Lucy's; theirs

C. Lily and Lucy's; theirs

D. Lily and Lucy's; their