Match the cells in $\text{Group I}$ with their corresponding entries in $\text{Group II}$

$\begin{array}{|l|l|l|l|} \hline & \textbf{Group I} && \textbf{Group II} \\ \hline P. & \text{Mast cells} & 1. & \text{Activation of the complement pathway} \\ \hline Q. & \text{Natural killer cells} & 2. & \text{Expression of CD56} \\ \hline R. & \text{Neutrophils} & 3. & \text{Contains azurophilic granules} \\ \hline S. & \text{Dentritic cells} & 4. & \text{Defense against helminthic infection} \\ \hline && 5. & \text{Production of antibodies specific to bacteria} \\ \hline && 6. & \text{Contains long menbranous projections} \\ \hline \end{array}$

1. $\text{P-4, Q-2, R-3, S-5}$
2. $\text{P-4, Q-2, R-3, S-6}$
3. $\text{P-3, Q-1, R-2, S-5}$
4. $\text{P-3, Q-1, R-2, S-6}$