This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endocrinology, Subject name: Pharmacology
A 48 years old woman presents with vulval pruritus. On examination, there is erythema of external genitalia. She is a known diabetic for 10 years. Her HbAlc level reduced to 6.6% when compared to previous value of 7.8% four months ago. The medication most probably responsible for her symptoms is 
Select and explain. 
A. Sitagliptin, B. Canaglifozin, C. Acarbose, D. Exenatide
B: Canaglifozin
Answer: B: Canaglifozin 
Explanation: Answer: b) Canaglifozin. Refer previous question.