We have two frames. One is your friends and one is yours. In the world of physics. Why should one of them be more correct than another? We're talking about relative motions. That's why a) and b) are wrong. You can't say that anyone is more correct/wrong than another in these reference frames.
Then we have c) and d) left. Then it's rather obvious that c) is the correct answer. Assuming that you both describe the ball correct from your reference frame. And in the text it says so. c) is the correct answer. This is really a question of relativity.