Social & Preventive Medicine obstetrics,pediatrics and geriatrics c97f6be5 What is deficient in exclusively breast fed baby - A Vitamin B B Vitamin A C Vitamin C D Proteins High-Yield Explanation Vitamin A is absent.The only vitamins present are vitamin C and D.REF.PARK'S TEXTBOOK OF PREVENTIVE AND SOCIAL MEDICINE.Editon-21.Page no.-496