Will Ucla rescind me?

Ucla is letting my take calc 2 in the summer. I’m on a path to a c(possibility of getting a b, but the teacher said I’ll most likely end up with a c), the provision says I need to get a b, and to notify them otherwise. I’m an Econ major and it’s apart of my major prep. I have 2 A’s and 2 b’s in my major courses already. Do I have any chance? Has anyone been in a similar situation? What happened?