Match the cells in Group I with their corresponding entries in Group II.

Group I	Group II
P. Mast cells	1. Activation of the complement pathway
Q. Natural killer cells	2. Expression of CD56
R. Neutrophils	3. Contains azurophilic granules
S. Dendritic cells	4. Defense against helminthic infection
	5. Production of antibodies specific to bacteria
	6. Contains long membranous projections

A. P-4, Q-2, R-3, S-5

B. P-4, Q-2, R-3, S-6

C. P-3, Q-1, R-2, S-5

D. P-3, Q-1, R-2, S-6

Answer: Option B