Please help): The following sentence contains a transitional word or phrase:
I jumped back on the curb when I heard the car horn otherwise I would have been hit for sure!
Which revision correctly punctuates the sentence?

A: I jumped back on the curb when I heard the car horn, otherwise, I would have been hit for sure!
B: I jumped back on the curb when I heard the car horn; otherwise, I would have been hit for sure!
C: I jumped back on the curb when I heard the car horn, otherwise I would have been hit for sure!
D: I jumped back on the curb, when I heard the car horn; otherwise I would have been hit for sure!​

sam knew that staying up late on a weeknight would effect his exam performance the next day. however, he believed that his friends would be mad at him if he didn't join them. peer pressure and the thought of losing his friends scared sam. he planned to meet them for a couple of hours and then leave early to study for the exam.

one reason summer auggie is because she is kind, and the whole "boy war" between jack will and julian was probaly thinking her to be on auggies sode and if you read auggie and me,   she was nice to auggie because julian was mean and auggie needed some freinds. hope this

its he tried to add or forgive me but he said forego