Which equation could Lucius use to prove that his answer is correct? A \( 455+248=\square \) B \( 703+248=\square \) C \( 455-248=\square \)\( \quad \)\begin{tabular}{|c}\hline Day of \\ \hline Monc \\ \hline Tues \\ \hline Wed \\ \hline Thu \\ \hline Frid \end{tabular}

To check the correctness of an addition problem, using the original numbers in a way that verifies the result is key. For instance, option B \( 703 + 248 = \square \) can help confirm the sum from a different perspective as it involves the result of \( 455 + 248 \) and can be validated through visual or diagrammatic methods. Lucius could also benefit from employing methods like estimation. Rounding the numbers to the nearest hundreds, for example, can give a quick reference to the accuracy of his sums. Instead of adding exactly, he could round 455 to 500 and 248 to 200, getting an approximate sum of 700 — close to what he expects, allowing him to double-check his calculations effectively.