In the context of the given figure, which one of the following options correctly represents the entries in the blocks labelled $\text{(i), (ii), (iii),}$ and $\text{(iv)}$, respectively?
$$\begin{array}{||c|c||c|c||} \hline \textbf{N} & \textbf{U} & \textbf{F} & \textbf{(i)} \\ \hline 21 & 14 & 9 & 6 \\
\hline\hline \textbf{H} & \textbf{L} & \textbf{(ii)} & \textbf{0} \\ \hline 12 & \text{(iv)} & 15 & \text{(iii)} \\ \hline \end{array}$$
- $\mathrm{Q}, \mathrm{M}, 12$, and $8$
- $\mathrm{K}, \mathrm{L}, 10$ and $14$
- $\text{I}$, $\text{J}$, $10$, and $8$
- $\mathrm{L}, \mathrm{K}, 12$ and $8$
