Answer the question on the basis of the following marginal utility data for products \( X \) and \( Y \). Assume that the prices of \( X \) and \( Y \) are \( \$ 4 \) and \( \$ 2 \), respectively, and that the consumer's income is \( \$ 18 \).
\begin{tabular}{|c|c|c|c|}
\hline Units of \( X \) & \begin{tabular}{c}
Marginal \\
Utility, \( X \)
\end{tabular} & Units of \( Y \) & \begin{tabular}{c}
Marginal \\
Utility, \( Y \)
\end{tabular} \\
\hline 1 & 20 & 1 & 16 \\
\hline 2 & 16 & 2 & 14 \\
\hline 3 & 12 & 3 & 12 \\
\hline 4 & 8 & 4 & 10 \\
\hline 5 & 6 & 5 & 8 \\
\hline 6 & 4 & 6 & 6 \\
\hline
\end{tabular}
What quantities of \( X \) and \( Y \) should be purchased to maximize utility?
Multiple Choice
2 of \( X \) and 5 of \( Y \)
4 of \( X \) and 5 of \( Y \)
2 of \( X \) and 6 of \( y \)
2 of \( X \) and 1 of \( Y \)
