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: Gynaecology & Obstetrics
A lady with 8 wks pregnancy presented with random blood glucose of 177mg/d1. The treatment is: 
Select and explain. 
A. Phenformin, B. Sulfonylurea, C. Insulin, D. Glipizide
C: Insulin
Answer: C: Insulin 
Explanation: None