77.關於fluoride therapy的敘述，下列何者錯誤？
(A)topical fluoride可透過tablets方式直接吸收
(B)topical fluoride可透過唾液中氟濃度上升間接吸收
(C)systemic fluoride在pre-epruptive時期可用來預防齲齒
(D)pre-eruptive fluoride僅能用來預防smooth surface caries

tablets 不應該是 systemic fluoride嗎?