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: Social & Preventive Medicine
Which one of the following describes the flavouring substance asafoetida (Hing) ? 
Select and explain. 
A. Dried leaf extract, B. Exudate from chopped roots, C. Pith of stem boiled and dried, D. Dried and hardened paste of fruit
B: Exudate from chopped roots
Answer: B: Exudate from chopped roots 
Explanation: None