A student designs an experiment to determine the electromotive force \(\mathcal{E}\) and internal resistance \(r\) of a battery using a decade resistance box and a voltmeter.

The decade resistance box, set to resistance \(R\), is connected across the terminals of the battery, and the voltmeter, which has a finite internal resistance \(R_V\), is connected in parallel with the resistance box. Assuming the voltmeter is ideal, the student records the potential difference \(V\) across the box for several values of \(R\), plots \(\dfrac{1}{V}\) as a function of \(\dfrac{1}{R}\), and uses the slope and vertical intercept of the best-fit line to calculate experimental values \(\mathcal{E}_{\text{exp}}\) and \(r_{\text{exp}}\). Which of the following correctly compares the experimental values \(\mathcal{E}_{\text{exp}}\) and \(r_{\text{exp}}\) to the true values \(\mathcal{E}\) and \(r\), respectively?