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
A patient with increased metabolic rate, hyperthyroidism, goiter and have deposits of calcium in capsule of thyroid, it can be due to: 
Select and explain. 
A. Follicular Carcinoma of thyroid, B. Medullary carcinoma of thyroid, C. De Quervain's thyroiditis, D. Riedel's thyroiditis
B: Medullary carcinoma of thyroid
Answer: B: Medullary carcinoma of thyroid 
Explanation: None