'"Class is for defining categories of "things", while instances are for defining their properties " - Why is the above statement wrong?

I saw this question in android button app creation page quiz. It says that this statement is wrong. But I still think that this statement is wrong. Please share your opinion about this.



Sources

This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.

Source: Stack Overflow

Solution Source