Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| SENSE ORGAN Body part |  | PHENOMENON Properties the sense detects |  | ACTION Type of sensing |
| --- | --- | --- | --- | --- |
| Eyes | can be used to detect | color; brightness; light; dark; shape; motion; distance; direction; texture; reflectivity; shine; dullness | by | looking; seeing; sight; vision |
| Hands; Skin | can be used to detect | texture; shape; temperature; hardness; roughness; softness; smoothness; flexibility; rigidity; size; dryness; wetness | by | touching; feeling |
| Ears | can be used to detect | sounds; volume; pitch; rising pitch; falling pitch; harmony; disharmony; voices; speech; accents; music; melodies; alarms; noise | by | hearing; listening |
| Noses | can be used to detect | odors; scents; aromas; decay; smells | by | smelling |
| Tongues | can be used to detect | flavors; saltiness; salt; salty; sweet; sweetness; sugar; sugary; sour; sourness; bitter; bitterness; umami; tastes | by | tasting |
Question:
Tongues can be used to detect sourness by. Select the correct choice to answer the question or fill in the blank.
Choices:
(A) smelling
(B) looking
(C) touching
(D) tasting
Answer:
(D) tasting