If There Were "Horizontal Equity" Between All Households in Canada

If there were "horizontal equity" between all households in Canada, then

A) households with identical abilities to pay would bear the same tax burden.
B) all households would pay the same percentage of income as tax.
C) households of the same size would share the same tax burden.
D) there would be equity between different income classes.
E) individuals in the same age group would share the same tax burden.