Problem: An adolescent who was diagnosed with type 1 diabetes mellitus at the age of 9, is admitted to the hospital in diabetic ketoacidosis. Which occurrence is the most likely cause of the ketoacidosis? Need Assignment Help? A. Skipped eating lunch. B. Incorrectly administered too much insulin. C. Had a cold and ear infection for the past two days. D. Ate an extra peanut butter sandwich before gym class.