This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Thyroid Malignancies, Subject name: Surgery
Most common type of Ca thyroid having least hematogenous spread - 
Select and explain. 
A. Follicular, B. Papillary, C. Anaplastic, D. Medullary
B: Papillary
Answer: B: Papillary 
Explanation: Ans. is 'b' i.e., Papillary 7