This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Larynx, Subject name: ENT
Which of the following statements is not true for contact ulcer? 
Select and explain. 
A. The commonest site is the junction of anterior 1/3rd and middle 1 /3rd of vocal cord and gastro-oesophageal reflux the causative factor, B. Can be caused by intubation injury, C. The vocal process is the site and is caused/aggravated by acid reflux, D. Can be caused by adductor dysphonia
A: The commonest site is the junction of anterior 1/3rd and middle 1 /3rd of vocal cord and gastro-oesophageal reflux the causative factor
Answer: A: The commonest site is the junction of anterior 1/3rd and middle 1 /3rd of vocal cord and gastro-oesophageal reflux the causative factor 
Explanation: Contact ulcer is seen on the vocal process(es) of the larynx. Acute ulceration can occur after intubation but contact ulcer with a granuloma is the result of vocal abuse, repeated throat clearing and gastro-oesophageal reflux. Prolonged intubation causes ulceration of mucosa over the vocal process, infection and granuloma formation. However, adductor dysphonia is a type of spasmodic dysphonia in which there is irregular hyperadduction of cords.