This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Genetics, Subject name: Medicine
All are true about syndrome X except 
Select and explain. 
A. Hyperglycemia, B. Hypoinsulinemia, C. Abdominal obesity, D. Hyperiglyceridemia
B: Hypoinsulinemia
Answer: B: Hypoinsulinemia 
Explanation: Metabolic syndrome, sometimes known by other names, is a clustering of at least three of the five following medical conditions: central obesity, high blood pressure, high blood sugar, high serum triglycerides, and low serum high-density lipoprotein (HDL) Ref Robbins 9/e pg 170