Someone help please!

Hi,

When I read toefl essay with my friends, cheaked the answer, my answer is not correct, and I don't agree with the answer, is it ok course of story to say

" this essay didn't say such a thing at all. this answer is totally wrong. let me see your answer?( I saw my friends answer) oh, your answer's right! why did you chose this one?"

Thanks for your help!