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: ENT
True about vocal nodule is/are -a) Also known as screamer's nodeb) Occur at junction of ant. 1/3rd & post. 2/3rd of vocal cordsc) Most common presentation is aphoniad) Microlaryngoscopic surgery is not useful 
Select and explain. 
A. ab, B. a, C. ad, D. bc
A: ab
Answer: A: ab 
Explanation: None