Question: Within head and neck carcinomas, what type of tumor is most obviously related to the human papillomavirus? 
 Options:  <1> Squamous cell carcinoma of the larynx. <2> Squamous cell carcinoma of the oropharynx. <3> Squamous cell carcinoma of the hypopharynx. <4> Adenocarcinoma sinonasal. <5> Undifferentiated carcinoma of cavum.
2