1-89Mark Feels the Need to Tap Everything Within His Arms

1-89.Mark feels the need to tap everything within his arms reach twice.He doesn't have any particular thoughts associated with this,he just becomes anxious if he doesn't do it,because "something bad might happen." Mark

A) does not have obsessive compulsive disorder.
B) has obsessive compulsive disorder.
C) has an unusual type of specific phobia.
D) has no disorder.