According to the video case history, Red Mango differentiates itself from its competition by serving real yoghurt with probiotics through its welcoming in-store environment and by offering self-service. Which of the following options correctly describe the ways in which Red Mango differentiates itself?
1) By serving real yoghurt with probiotics
2) Through its welcoming in-store environment
3) By offering self-service
4) All of the above reasons