At the end of 2019, Ms. Shelly Sampson has unused RRSP deduction room of $6,000 and undeducted RRSP contributions of $4,800. For the 2019 taxation year, Ms Sampson has net employment income of $71,000, spousal support received of $14,000, a net rental loss of $18,000 and interest receipts of $2,600. During 2019, she is a member of her employer's RPP to which she contributed $2,000 and her employer made a matching contribution of $2,500. A. Determine Shelly's Earned Income for 2019. B. Determine Shelly's maximum RRSP deduction for 2020. C. Calculate the maximum RRSP contribution that Shelly can make for 2020 without incurring a penalty