A 4-year-old child has recently been diagnosed with Type 1 diabetes. The parents tell the nurse that they do not understand much about diabetes. Which is the best way to explain Type 1 diabetes to them? Type 1 diabetes is:

D a problem that occurs when children eat too many sweets early in life and then are unable to metabolize sugar without insulin supplements. B a genetic disorder that makes the child unable to metabolize protein without insulin supplements. A an inborn error of metabolism that makes the child unable to burn fatty acids without insulin requirements. C a deficiency in the secretion of insulin by the pancreas that makes the child unable to metabolize carbohydrates without insulin supplements.