O $3,850 Question 12 3.45 pts Osborn Company's unadjusted book balance at December 31, 2018 is $15,800. The company's bank statement reveals bank service charges of $79. Two credit memos are included in the bank statement: one for $1,896 which represents a collection of an account receivable that the bank made for Osborn and one for $20 which represents the amount of interest that Osborn had earned on its interest-bearing checking account in June. Based on this information, Osborn's true cash balance is: O $17,716. O $17.795. 0 $17,637. O $15,800