When preparing the financial statements for the year ended 31 December 2011, Camilus Plc has accounted for

(a) A provision for amounts payable to a supplier because as at the date of reporting the supplier’s invoice has not been received;

(b) A provision for office cleaning in the month ended 31 December 2011;

(c) A provision for fitting air-conditioning ducts intended to take place in 2012;

(d) A provision for audit fees of £150,000, because the amount of audit fees payable would not be known until the auditor’s invoice is received, after his work is completed.

Required:

Comment on the correctness of the accounting for provisions.