A linear relationship is shown in the table.
\begin{tabular}{|c|c|c|c|c|}
\hline Time (hours) & 2 & 4 & 6 & 8 \\
\hline Distance (miles) & 8 & 16 & 24 & 32 \\
\hline
\end{tabular}
Is the linear relationship also proportional? Explain.
A. Yes, the constant of proportionality is 4.
B. Yes, there is no constant of proportionality.
C. No, the constant of proportionality is 4.
D. No, there is no constant of proportionality.