A person of 35 years is having firm belief about infidelity involving the spouse.And he never allow her to go out of home alone.He often locks his house, while going office.Inspite of all this he is persistantly suspicious about her character.The probable diagnosis is -

• A. Clearambault's syndrome
• B. Schizophrenia
• C. Othello syndrome
• D. Delusional parasitosis