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: Anatomy
Chassaignac's tubercle' is - 
Select and explain. 
A. Erb's point, B. Carotid tubercle on C6 vertebra, C. Found on first rib, D. Medial condyle of humerus
B: Carotid tubercle on C6 vertebra
Answer: B: Carotid tubercle on C6 vertebra 
Explanation: Chassaignac's tubercle (carotid tubercle) is the other name of anterior tubercle of transverse process of C6 vertebra.