Fuuun riddle. Answer right for full points :D?

[Candice]

Two mothers and two daughters go to a pet store and buy three cats. Each female gets her own cat. How is this possible?

 

[Never Enough]

1 grandmother 1 mom and 1 daughter

 

[Shawanna W]

one of the mothers is a daughter

 

[avin a laugh]

one is the grandmother

 

[Shawanna W]

one of the mothers is a daughter

 

[Shawanna W]

one of the mothers is a daughter