Write the next sentence in the following story.

How to clip a cockatiel's flier feathers
Find a partner to help you.
One person should hold your cockatiel firmly and put his middle and index fingers on the sides of the bird's neck to keep her from biting.
Towel your bird.

Select from the following.
(a). If you are having trouble controlling your bird, try covering your bird with a soft, clean towel. This may calm the bird and make him easier to handle.
(b). Start by rubbing her shedding skin with your hands. If you are holding her in a towel, turn her upside down so her back is facing you.
(c). If your cockatiel has flippy feathers, choose a little towel, perhaps the type you would use for a bath, to dry her feathers. This will relax her, so that her feathers stay healthy longer and become clean.
(d). Gently rub her back with a soft towel to ensure no irritation. Cockatiels can get hot quickly and easily.. The answer should be
(a).