22.Which of the following statements about standard costing are true?
(1) A standard cost is a predetermined estimated unit cost
(2) A standard cost can be used as a control device to help improve performance
(3) A standard cost card shows the unit cost details only of each product
A.1,2and3
B.1and2only
C.2and3only
D.1 and 3 only
答案：1 and 2 only
A standard cost is a predetermined unit cost used for inventory valuation and control.' The difference between a standard figure and an actual figure is a variance and variance analysis is a control device. So statements 1 and 2 are true.
A standard cost card shows the standard quantities of materials and labour time as well as the unit cost details so statement 3 is false.
