A client has obsessivecompulsive disease, which has seriously interfered with his ability to work. ...

A client has obsessivecompulsive disease, which has seriously interfered with his ability to work. To help the client, the nurse must understand that a compulsion is what?
 
  A) A feeling of unreality or strangeness concerning oneself, the environment, or both
  B) An insistent thought recognized as arising from the self but not controllable by the person
  C) A repetitive intrusive and unwanted urge to perform or performance of an act contrary to one's usual standards
  D) A fixed false belief not true to fact and not ordinarily accepted by other members of the person's culture