If I ask you to choose between an apple, an orange and a pear, guess what: "You get confused :unsure: ". After you have made your choice, , you feel damned. Its all natural. However, if I give you only an orange, you dont get any of those thoughts and terrible feeling and you still get to enjoy the orange :) .
To help yourself, simply assume school A and B rejected you and you just had to choose C. Also ask yourself, if school C was the only option you had , would you have a terrible academic career?
#learn to look on the bright side, no one knows the perfect decision, its just important to keep moving..