<prompt> A young person is having comedones and papulo-pustular acne over face and trunk and back. How will you manage the patient?Topical retinoic acidOral doxycycline topical retinoic acidTopical clindamycinOral retinoic acid  <response>: Refer: Fitzpatricks Dermatology in General Medicine, 8th editionAlgorithm of treating Acne 