What are some of the health problems associated with obesity in dogs?

Insulin resistance and glucose intolerance.
Alterations in lipid metabolism.
Hypertension and circulatory problems.
Joint and reproductive problems.
Visual impairments.
Increased risk of infections and tumors.
a) I, II, and III are correct.
b) I, II, III, and IV are correct.
c) I, II, III, IV, V, and VI are correct.