How to hide a column when the other one is the specific value

Hi~
There are 3 columns each row.

The situation is while first column is A, the 2nd's value appears, but the 3rd is hided.

If first column is B, the 2nd's value is hided, but the 3rd shows up.
How to do on list page?
Thank you <img src='https://asprunner.com/forums/file.php?topicimage=1&fieldname=question&id=15757&image=1&table=forumtopics' class='bbc_emoticon' alt=':)' />