The correct option is D All of the above
Taste buds are nerve endings distributed on the tongue which help in the perception of taste. Small openings called taste pores are present on the tongue epithelium. Food dissolved in saliva come into contact with the taste receptors through taste pores. Taste receptor cells are clustered in taste bud which help in detecting taste like salty, sweet, bitter, sour and umami. Thus the correct answer is option D.