(A) Basophils
(B) Lymphocytes
(C) Eosinophils
(D) Neutrophils
(E) Monocytes
$\begin {array} {1 1} (1)\;A \rightarrow C \rightarrow B \rightarrow D \rightarrow E & \quad (2)\;C \rightarrow A \rightarrow D \rightarrow E \rightarrow B \\ (3)\;C \rightarrow A \rightarrow D \rightarrow B \rightarrow E & \quad (4)\;A \rightarrow C \rightarrow E \rightarrow B \rightarrow D \end {array}$