The Benefit of Daily Interdental Cleaning Such as Flossing Is

The benefit of daily interdental cleaning such as flossing is the reduction or prevention of inflammation caused by the immune response to the toxins produced by interdental plaque biofilm. Evidence from a comprehensive systematic review indicated that flossing in addition to toothbrushing reduces gingivitis in comparison with toothbrushing alone.

A) The first statement is true. The second statement is false.
B) The first statement is false. The second statement is true.
C) Both statements are true.
D) Both statements are false.