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
A 34 years old male presents with a history of thirst, polyuria and recent 3.2 kg weight loss. His urine contains a small amount of ketones. Which of the following would suggest he is most likely to have type 2 diabetes than type 1? 
Select and explain. 
A. BMI of 23, B. High circulating insulin Levels, C. Positive islet cell antibodies, D. Plasma bicarbonate of 8 mmol/l
B: High circulating insulin Levels
Answer: B: High circulating insulin Levels 
Explanation: None