Selective Polishing Is Recommended,because The

Selective polishing is recommended,because the:

A) abrasive agent used during coronal polishing actually removes a small amount of the fluoride-rich outer enamel layer.
B) abrasive agent used during coronal polishing actually removes a small amount of the fluoride-depleted outer enamel layer.
C) abrasive agent used during coronal polishing impedes uptake of fluoride by the outer layer of enamel.
D) fluoride contained in the abrasive agent is not taken up by the teeth.