A Child Has Been Admitted to the Hospital Unconscious

A child has been admitted to the hospital unconscious.The child has a history of insulin-dependent diabetes mellitus,and according to the child's mother,he took a normal dose of insulin this morning with breakfast.At school,the child had two pieces of birthday cake and some ice cream at a class birthday party.What is the likely reason for this child's unconscious state?

A) Metabolic alkalosis
B) Metabolic ketoacidosis
C) Insulin shock
D) Insulin reaction