Question: How to introduce a fish to its aquarium

  Options: 
 A. Allow a few days for the water in the aquarium to settle. Buy the fish and place the bag on the water's surface to float for three minutes. Untie the bag and release the fish.
 B. Allow a few days for the water in the aquarium to settle. Buy the fish and place the bag on the water's surface to float for thirty minutes. Untie the bag and release the fish.
Answer: B