Which of the following statements are correct?
A. Basophils are the most abundant cells of the total WBCs.
B. Basophils secrete histamine, serotonin and heparin.
C. Basophils are involved in the inflammatory response.
D. Basophils have a kidney-shaped nucleus.
E. Basophils are agranulocytes.
Choose the correct answer from the options given below: