Outline how Type I diabetes is caused, what its effects are, and how it can be treated.
a) Type I diabetes is caused by an autoimmune reaction destroying insulin-producing cells; its effects include high blood sugar levels; it can be treated with insulin injections.
b) Type I diabetes is caused by insulin resistance; its effects include low blood sugar levels; it can be treated with diet and exercise.
c) Type I diabetes is caused by genetic factors; its effects include insulin overproduction; it can be treated with oral medications.
d) Type I diabetes is caused by pancreatic cancer; its effects include insulin deficiency; it can be treated with surgery.