| Which of the following factors could cause a company’s gross profit percentage on sales to fall below the expectedlevel?
 1 Understatement of closing inventories.
 2 The incorrect inclusion in purchases of invoices relating to goods supplied in the following period.
 3 The inclusion in sales of the proceeds of sale of non-current assets.
 4 Increased cost of carriage charges borne by the company on goods sent to customers.
 A 3 and 4
 B 2 and 4
 C 1 and 2
 D 1 and 3
   C |