(A) Basophils

(B) Lymphocytes

(C) Eosinophils

(D) Neutrophils

(E) Monocytes

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