What is the primary difference between a micropipette and an automatic dispenser?

A. A micropipette measures and transfers small liquid volumes manually, while an automatic dispenser dispenses liquid automatically

B. A micropipette is used for large volume transfers, while an automatic dispenser is used for precise measurements

C. A micropipette requires automation, while an automatic dispenser is manually operated

D. A micropipette is used for whole blood samples, while an automatic dispenser is used for serum