In my first semester senior year grades I got a D in AP Calculus BC and a C in AP Economics. I was admitted into computer science at Purdue, but will they rescind my admission now because of this?
Yeah you probably will get your offer rescinded, especially for comp Sci. Good luck and work on raising your grades
I would strongly recommend that you call the admissions counselor for your area and discuss this, hopefully with a really good reason for the drop in your grades. They may wait and see how you do this semester.