please explain why the option is correct and remaining incorrect please answer with proper explanation or leave

In a study about used car sales of the same trim and year, a researcher is interested in the relationship between list price of the car and odometer reading. a. The independent (explanatory) variable is: 0 odometer reading O list price b. The dependent (response) variable is: O odometer reading O list price c. The correlation between the two variables will most likely be: O positive C none C) negative