RRSP: For the 2017 taxation year, Marion Blue has net employment income of $45,000, spousal support received of $18,000, a net business loss of $3,500, and interest receipts of $1,600. She is member of her employer's RPP to which she contributes $1,800. Her employer makes a matching contribution and reports a 2017 Pension Adjustment of $3,600. At the end of 2017, she has unused RRSP deduction room of $4,800. In early 2017, she contributes $9,400 to her RRSP. Determine Marion's maximum RRSP deduction for 2018. Assuming that she make this maximum deduction, determine the amount of any unused RRSP Deduction Room at the end of 2018