The ability－to－pay concept is fundamental to the income tax structure. Constructs used

The ability-to-pay concept is fundamental to the income tax structure. Constructs used to implement this concept include？()I. Deductions.II. Progressive tax rates.III. Exclusions.IV. Business losses.

A、Only statement II is correct

B、Statements I, III, and IV are correct

C、Statements I, II, and IV are correct

D、Statements I and III are correct

E、Statements I, II, III, and IV are correct