Supraglottis includes all of the following except:
|C||Lingual surface of epiglottis|
|D||Laryngeal surface of epiglottis|
c. The lingual surface of epiglottis and vallecula are a part of oropharynx according to Logan Turner 10th/ed p 171
d. According to Ohingra 6th/ed p 301
"Whole of epiglottis is included in supraglottic areA."
e. According to Scott-Brawn's lth/ed Vol 3 p 2132 - whole of epiglottis is included in the supraglottiC.
f. But since here we have to choose one option. Therefore, I am going with Turner.