please give a clear answer because I already sent this question, and the answer wasn't clear

so please make the answer as the Required first a then b then c, please give me a good and clear answer

Question 2 The following balance sheet contains errors. Billy Brown Services Co. - .. Balance Sheet ....... Required a. List the errors in the balance sheet above. b. Prepare a corrected balance sheet. c. Compared with the cash basis, what are the advantages and the disadvantages of the accrual basis