After Withdrawing Medication and Removing the Needle from the Vial

After withdrawing medication and removing the needle from the vial, the nurse notes there is an air bubble in the syringe. The nurse should

A) Return the medication to the vial and attempt to draw it again.
B) Gently shake the syringe in a downward motion.
C) Roll the syringe gently between her hands.
D) Tap the barrel of the syringe to float the bubble toward the needle.