Granular leukocytes, or granulocytes, have a grainy appearance when stained and examined under a microscope. Granular leukocytes include
a. monocytes and lymphocytes
b. erythrocytes, neutrophils, and lymphocytes
c. neutrophils, monocytes, and lymphocytes
d. neutrophils, eosinophils, and basophils
e. eosinophils, basophils, and lymphocytes