Indicate which of the following statements is TRUE with respect to internal controls. (check all that apply) Select one or more: a. Fraud committed by top-level employees is more difficult to detect because those employees more often have the ability to override internal control procedures. b. The components of internal control are built on the foundation of the ethical tone set by top management. c. Collusion refers to the act of a single individual circumventing internal control procedures. d. Historically, customer tips have been the most common means of detecting employee fraud.

Inventory by three methods; cost of goods sold the units of an item available for sale during the year were as follows: jan. 1 inventory 20 units at $1,800 may 15 purchase 31 units at $1,950 aug. 7 purchase 13 units at $2,040 nov. 20 purchase 16 units at $2,100 there are 18 units of the item in the physical inventory at december 31. determine the cost of ending inventory and the cost of goods sold by three methods, presenting your answers in the following form: round your final answers to the nearest dollar. cost inventory method ending inventory cost of goods sold a. first-in, first-out method $ $ b. last-in, first-out method $ $ c. weighted average cost method $ $