A female patient presented with depressed mood, loss of appetite and no interest in surroundings. There is associated insomnia. The onset of depression was preceeded by a history of business loss and immediately soon after it she developed the followiung symptoms for the past 1 year.Which of the following is true-

• A. No treatment is necessary as it is due to business loss
• B. SSRI is the most efficacious of the available drugs
• C. Start antidepressant drug treatment based on side effect profile
• D. Combination therapy of 2 anti depressant drugs