Question: use mouthwash

  Options: 
 A. Start by pouring the right amount out of the bottle. ... Rinse vigorously for 30 seconds, making sure that the mouth wash comes into contact with all areas of your teeth. Gargle for 30-60 minutes, in order to ensure that your mouthwash can deal with bacteria at the back of the tongue. Spit out the mouth wash.
 B. Start by pouring the right amount out of the bottle. ... Rinse vigorously for 30 seconds, making sure that the mouth wash comes into contact with all areas of your teeth. Gargle for 30-60 seconds, in order to ensure that your mouthwash can deal with bacteria at the back of the tongue. Spit out the mouth wash.
Answer: B