Add one class? It says we need 3. Totally confused here

JavaScript
1

https://www.freecodecamp.org/challenges/target-the-same-element-with-multiple-jquery-selectors

It says here:
Only add one class with each of your three selectors.

What the hell does that mean?

What’s wrong with my code and whats wrong with my code?

2

You’re going to use three different selectors that add one class each. So the .button selector adds one class, the .btn selector adds another, etc., until you have three in total.