Match the cell type (Column I) with its function (Column II).

$$\begin{array} {lll} \textbf{Column I} & & \textbf{Column II} \\ \text{P. B cells} & & \text{1. Humoral immunity} \\ \text{Q. Neutrophils} & & \text{2. Cytotoxicity} \\ \text{R. T cells} & & \text{3. Histamine-associated allergy} \\ \text{S. Mast cells} & & \text{4. Phagocytosis}\end{array}$$

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