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: Surgery
Pt. after thyroid surgery presents with perioral paresthesia. serum Ca level is 7 mg/dl. What will be the best min (management) - 
Select and explain. 
A. Oral vit D3, B. Oral vit D3 with Ca, C. I.V.Ca. gluconate, D. Oral calcium
D: Oral calcium
Answer: D: Oral calcium 
Explanation: Ans. is 'd' i.e. Oral Calcium Since the pt. is presenting with mild symptoms he should be treated with oral calcium supplementation.