What's an example the author gives of a grammar rule used in ASL?

A.To show that an action is taking place in the present, use the sign for "now" at the end of the sentence.

B.To show that an action took place in the past, use a pause at the end of the sentence.

C.To show that an action is taking place in the present, use the sign for "now" at the beginning of the sentence.​