On January 31, 2021, the first year of her retirement, Concetta withdrew $12,000 from her spousal RRIF. In 2020, Lorenzo, her husband had deposited $10,000 to the spousal RRSP giving it a balance at the end of the year of $120,000. Concetta turned 64 on January 15, 2020, and Lorenzo turned 63 on December 24, 2020. Both Lorenzo and Concetta have an average tax rate of 30% and a marginal tax rate of 40% in retirement.

a. How much did Concetta receive when she made the withdrawal? 

b. How much income tax is owed by one or both?