inventroty

6.2 Which of the following costs may be included when arriving at the cost of finished goods inventory for
inclusion in the financial statements of a manufacturing company?
1 Carriage inwards
2 Carriage outwards
3 Depreciation of factory plant
4 Finished goods storage costs
5 Factory supervisors’ wages
A 1 and 5 only
B 2, 4 and 5 only
C 1, 3 and 5 only
D 1, 2, 3 and 4 only

answer is c. why not include finished goods storage cost?