The difference between type 1 and type 2 diabetes is that
a. for type 2 diabetes, insulin is produced but not used; type 1 results from lack of insulin production.
b. treatment for type 2 involves insulin injections, whereas type 1 can be controlled, usually by diet.
c. only type 1 can result in complications such as kidney disease, reduced circulation, or stroke.
d. type 1 can be a result of lifestyle, and type 2 is thought to be caused by a virus or other agent.