What is the most logical next event?

A woman with black hair is explaining something. The woman pulls out a container with hair rolls. The woman pulls out a bottle of shampoo. the woman

a). begins to apply the product to her hair.
b). sprays the hair rolls on her neck.
c). rolls her hair and pins it in place and leaves it for ten minutes.
d). then demonstrates how to pour some of the product into her hair.
c).