Arrange the following steps for WBC counting in correct order:
(A). Draw the blood sample, fill venous blood till 0.5 mark
(B). Place the cover slip on the counting chamber at the right place
(C). Use a WBC pipette of a hemocytometer
(D). Draw WBC diluting fluid, fill the fluid till 11 mark, mix with blood
Choose the correct answer from the options given below: