Deception vs. Inaccurate

I was stuck between A and C. I liked A but my issue was I know the definition of deception which is intentionally misleading someone. I picked C because no where in the argument does it hint the person was intentionally trying to deceive them. So going forward how do you determine the difference or the better answer in a question like this ? because technically deception and inaccurate could’ve both worked. Because technically the person was inaccurate in their statement because they only focused on one thing.