John receives OAS, and collects a healthy pension. His income for the year was $80,000 over and above his annual OAS payment of $7,040. Which of the following statements are true with respect to the tax treatment of the OAS that John receives?

a) If a repayment is required, it is deducted in determining the taxpayers net income and added to income tax payable.

b) If a repayment is required, it is included as income in determining the taxpayers net income and deducted from income tax payable.

c) OAS is a tax on the elderly.

d) None of the above are true.