饮水氟化预防龋病的适宜浓度是A、0.1~0.3mg/LB、0.4~0.6mg/LC、0.7~1.0mg/LD、1.1~1.3mg/LE、1.4~1.6m

饮水氟化预防龋病的适宜浓度是

A、0.1~0.3mg/L

B、0.4~0.6mg/L

C、0.7~1.0mg/L

D、1.1~1.3mg/L

E、1.4~1.6mg/L

请帮忙给出正确答案和分析，谢谢！