Spectro Enviro prepares adjusting entries monthly. The following information concerns the adjusting entries that need to be recorded on October 31, 2020, for the month just ended. a. The Office Supplies account had a $1,000 balance on October 1. During October, the company purchased supplies at a cost of $7,300, which was added to the Office Supplies account. The inventory of supplies on hand at October 31 had a cost of $1,400. b. An analysis of the company's insurance policies provided these facts: Policy # Purchase Date Coverage Period in Years Cost ($) 1 April 1, 2019 2 6,000 2 April 1, 2020 3 7,200 3 April 1, 2020 1 1,320 The total premium for each policy was paid in full at the purchase date, and the Prepaid Insurance account was debited for the full cost. c. The company has 10 employees who earn a total of $1,600 for every working day. They are paid each Monday for their work in the five-day workweek ending on the preceding Friday. October 31, falls on a Monday, and all 10 employees worked the first day of the week. They will be paid salaries for five full days on Monday, November 7, 2020. d. The company purchased a building on August 1, 2017. The building cost $310,000, and is expected to have a $40,000 residual value at the end of its predicted 25-year life. e. Because the company is not large enough to occupy the entire building, it arranged to rent some space to a tenant at $1,200 per month, starting on September 1, 2020. The rent was paid on time on September 1, and the amount received was credited to the Rent Earned account. However, the tenant has not paid the October rent. The company has worked out an agreement with the tenant, who has promised to pay both October's and November's rent in full on November 15. f. On October 1, the company also rented space to another tenant for $1,050 per month. The tenant paid five months' rent in advance on that date. The payment was recorded with a credit to the Unearned Rent account. Required: Use the information to prepare the October 31, 2020, month-end adjusting entries