Which of the following statements about diabetes are INCORRECT?
选项：

A: Type 2 diabetes comprises 10% of all primary diabetes
B:Type 1 diabetes is caused by peripheral resistance to insulin action
C:Patients with type 1 diabetes are more likely to suffer from serious metabolic complications, such as ketoacidosis
D:In type 2 diabetes, insulitis of Langerhans islets is common
E:In type 2 diabetes, amyloid deposition can be found in Langerhans islets