If the marginal utility of the last unit commodity $\mathrm{X}$ at $\mathrm{N}2$ is 16 and that of commodity $\mathrm{Y}$ at $\mathrm{N}4$ is 24 , the consumer will be at equilibrium when ____________

A. the price-quantity ratios are equal
B. equal amounts of $X$ and Yare consumed
C. less of $\mathrm{Y}$ and more of $\mathrm{X}$ are consumed  
D. less of $\mathrm{X}$ and more of $Y$ are consumed

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Correct Answer: C