Mrs. Ida Smith has a 2019 net employment income of $102,000, taxable benefits of $3,500, an RPP contribution of $3,000, spousal support payments received of $12,000, and interest on bank accounts of $2,000. Her employer makes a matching contribution to her pension plan and therefore her PA is $6,000. At the end of 2019, her Unused RRSP Deduction Room was $4,800 and she has no un-deducted contributions. In 2020, she contributes $4,000 to her RRSP and makes an RRSP deduction of $3,000. Required: What is the amount of Mrs. Smith’s:

a) earned income for RRSP purposes.

b) RRSP contribution limit for 2020. 

c) unused RRSP Deduction Room at the end of 2020.