Question

When you answer can you please tell me why each of the wrong answer choices is wrong, because I'm confused. I know the right answer but for choice b and c i don't know why they are incorrect

Answer 1

B which is 0 would be in the range because it is "less than or equal to" 0. 
C is also not in the range though. This problem has more than one right answer. C could be a correct answer as well.