Cathy Company prepays all rent. The company reported the following on its comparative balance sheets at 12/31/2021: Prepaid Rent 12/31/2021 $30,000 12/31/2020 $20,000 The company's statement of cash flows reported $400,000 of cash paid for rent during 2021. What amount of rent expense must Cathy have recorded on its 2021 income statement? (HINT: you are going from cash accounting to accrual accounting). $410,000 $400,000 $490,000 $390,000 O $10,000