Question: How to prepare a bath.

  Options: 
 A. Unplug the drain in the bath tub. Turn on the faucet to make water come out at the desired temperature, usually warm or hot. Wait until the bath is at least half full, but not completely full. Add some soap if desired.
 B. Plug the drain in the bath tub. Turn on the faucet to make water come out at the desired temperature, usually warm or hot. Wait until the bath is at least half full, but not completely full. Add some soap if desired.
Answer: B