Match the following products with the suitable manufacturing process:
$\begin{array}{|l|l|l|l|} \hline & \textbf{Product} && \textbf{Manufacturing Process} \\ \hline P. & \text{Toothpaste tube} & 1.& \text{Centrifugal casting} \\ \hline Q. & \text{Metallic pipes} & 2. & \text{Blow moulding} \\ \hline R. & \text{Plastic bottles} & 3. & \text{Rolling} \\ \hline S. & \text{Threaded bolts} & 4.& \text{Impact extrusion} \\ \hline \end{array}$
- $P-4, Q-3, R-1, S-2$
- $P-2, Q-1, R-3, S-4$
- $P-4, Q-1, R-2, S-3$
- $P-1, Q-3, R-4, S-2$