How many enantiomeric pairs are possible for an aldohexose? a.2 b.4 c.8 d.16?

Based on this question, one thing that we would seriously consider would be the fact of first, doing  first. By doing this, it would then give us our answer as 16. By us understanding this point of view, we would then consider that this would then be your answer. That would then include that there would then be 16 pairs of the "enantiomeric pairs", and that would then be the possible estimate.

a.2
b.4
c.8
d.16