Study the diagram given below and identify the cells labelled as $A$, $B$, $C$ and $D$, and choose the correct option.

• A
  $A = \text{Eosinophil}, B = \text{Erythrocyte}, C = \text{Neutrophil} \text{ and } D = \text{Basophil}$
• B
  $A = \text{Eosinophil}, B = \text{Lymphocyte}, C = \text{Neutrophil} \text{ and } D = \text{Monocyte}$
• C
  $A = \text{Erythrocyte}, B = \text{Basophil}, C = \text{Neutrophil} \text{ and } D = \text{Lymphocyte}$
• D
  $A = \text{Eosinophil}, B = \text{Monocyte}, C = \text{Neutrophil} \text{ and } D = \text{Lymphocyte}$