Please choose the correct answer to the question: Juvenile diabetes is a disease caused by the body's inability to create insulin. The body's white blood cells attack the pancreatic cells that produce insulin. This type of disease is known as

Answer1: a cardiovascular disease. Answer2: an infectious disease. Answer3: a digestive system disease. Answer4: an autoimmune disease.

Answer format: answer1/answer2/answer3/answer4
Answer: answer4