\begin{tabular}{|l|l|l|}
\hline Q.27 & Which of the plot(s) shown is/are valid Mohr's circle representations of a plane \\
stress state in a material? (The center of each circle is indicated by 0.) \\
\hline
- & $\mathrm{M} 1$ \\
\hline - & $\mathrm{M} 2$ \\
\hline - & $\mathrm{M} 3$ \\
\hline - & $\mathrm{M} 4$ \\
\hline
\end{tabular}