Hi, can anyone help me with this? Thanks!

Choose the best answer:

She just isn't quite tall enough to reach up and open the door.

A. She can't reach up to open the door because she is too short.

B. She isn't tall, but she can manage to reach up and open the door.

C. She is much too short to reach up and open the door.

D. She's quite tall, but she can't reach up to open the door.