is a cash basis taxpayer with the following transactions during the year: Cash received from sales of products $90000 Cash paid for expenses (except rent and interest) $30,000 Rent paid on a leased building for 24 months beginning December 1 $54,000 Prepaid interest on a bank loan, paid on December 1, for the next 3 months $ 6,000 Four months' rent received on a leased building, on October 1 $ 8,000 Calculate Polly's income from her business for this calendar year