Whats worse for your teeth? Excessive grapefruit juice or orange pop ?

Excessive grapefruit juice 2 quarts a day or 3-4 cans of orange pop a day,

i would think the obvious is grapefruit juice , but too much flushes your body of its calcium cause damage to to the teeth and bones,. and pop is just sugar and that really rots your teeth.
 
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