Which of the following statements is false about health savings accounts (HSAs)?

Select one:

a. Deductible contributions to HSAs are unlimited.

b. Distributions from HSAs which are used for qualifying medical expenses are not subject to tax or penalty.

c. HSAs must be paired with qualifying high-deductible health insurance.

d. Distributions from HSAs which are not used for medical expenses are generally subject to a 20 percent penalty and income taxes.

e. Taxpayers qualifying for Medicare do not qualify to make HSA contributions.