With regard to the medical expense credit, which of the following is correct?

Choose the correct answer.

A.

Total qualifying medical expenses are reduced by the lesser of 3% of the taxpayer's net income in the year or an indexed amount in calculating the tax credit.

B.

The tax credit is calculated based on the total qualifying medical expenses incurred by a taxpayer during the calendar year.

C.

Qualifying medical expenses of the taxpayer, minor children and spouse can be included in the calculation of the tax credit but medical expenses related to the taxpayer's dependants over the age of 18 must be excluded.

D.

The portion of the qualifying medical expenses exceeding the threshold is multiplied by the highest federal income tax rate.