Question 54·Hard·Two-Variable Data: Models and Scatterplots

The scatterplot titled "Used Car Price vs. Mileage" shows a line of best fit for the relationship between mileage $m$ (in miles) and price $p$ (in dollars).

Two points on the line of best fit are labeled $(20000,20500)$ and $(60000,12500)$. A point labeled "Car" is at $(55000,15000)$.

For a data point, the residual is defined as

Which choice is the residual for the point labeled "Car"?