If Government Was Not Allowed to Make Interpersonal Comparisons of Utility

Multiple Choice

If government was not allowed to make interpersonal comparisons of utility, what effect would this have on how we tax people?

A) We could not tax at all.
B) We could not justify taxing the rich more than the poor.
C) We would tax the rich more than the poor.
D) Whatever tax government collects would have to be voluntarily given by the people
Taxed.
E) We could continue taxing the way we do, but it would be less efficient.