The Mother of a 7 and ½ Year-Old Boy Describes

The mother of a 7 and ½ year-old boy describes a 6-month history of excessive eye blinking and intermittent chirping. This mother now reports that she has recently noticed her son has developed grunting sounds that started when he began school this term. What is the most likely diagnosis to consider?

A) Tourette's disorder
B) Provisional tic disorder
C) Transient tic disorder, recurrent
D) Persistent chronic) vocal tic disorder