This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Medicine
During a class on exercise for diabetic clients, a female client asks the nurse educator how often to exercise. The nurse educator advises the clients to exercise how often to meet the goals of planned exercise? 
Select and explain. 
A. At least once a week, B. At least three times a week, C. At least five times a week, D. Every day
B: At least three times a week
Answer: B: At least three times a week 
Explanation: Diabetic clients must exercise at least three times a week to meet the goals of planned exercise — lowering the blood glucose level, reducing or maintaining the proper weight, increasing the serum high-density lipoprotein level, decreasing serum triglyceride levels, reducing blood pressure, and minimizing stress. 
Exercising once a week wouldn’t achieve these goals. Exercising more than three times a week, although beneficial, would exceed the minimum requirement.