A. 1.5 lac – 4.5 lac platelets per liter blood.
B. 1.5 lac – 4.5 lac platelets per micro-liter of blood.
C. 1.5 million – 4.5 million platelets per liter of blood.
D. 1.5 million – 4.5 million platelets per micro-liter of blood.
✅ The correct answer is option B.