The stress-strain curve for mild steel is shown in the figure given below. Choose the correct option referring to both figure and table.
$\begin{array}{|l|l|}\hline \textbf{Point on the graph} & \textbf{Description of the point} \\ \hline \text{P} & \text{1. Upper Yield Point} \\ \hline \text{Q} & \text{2. Ultimate Tensile Strength} \\ \hline \text{R} & \text{3. Proportionality Limit} \\ \hline \text{S} & \text{4. Elastic Limit} \\ \hline \text{T} & \text{5. Lower Yield Point} \\ \hline \text{U} & \text{4. Failure} \\ \hline \end{array}$
- $P-1, Q-2, R-3, S-4,T-5, U-6$
- $P-3, Q-1, R-4, S-2,T-6, U-5$
- $P-3, Q-4, R-1, S-5,T-2, U-6$
- $P-4, Q-1, R-5, S-2,T-3, U-6$