Answer:
D. all of the above
Explanation:
It will help him be sure of the product
Optic nerve is the most affected as it results in total blindness
<span><span>45mg(16 floz)Small
</span><span>67mg(24 floz)med
</span><span>90mg(32 floz)large
-</span></span>www.caffeineinformer.com is where i got it from