A 41 year old woman presented with a history of aches and pains all over the body and generalized weakness for four years.She can not sleep because of the illness and has lost her appetite as well.She has lack of interest in work and does not like to meet friends and relatives.She denies feelings of sadness.Her most likely diagnosis is -

• A. Major depression
• B. Somatoform pain disorder
• C. Dissociative
• D. Somatization disorder