Final answer:
The true statement is that each revenue line should be shown separately with a corresponding cost of goods sold line for each revenue source.
Step-by-step explanation:
The statement that is true is c) Each revenue line should be shown separately with a corresponding cost of goods sold line for each revenue source.
When preparing financial statements, it is important to provide a clear and detailed breakdown of the revenue and cost of goods sold. Each revenue source should be reported separately to give a comprehensive view of the different income streams of the business. Similarly, each revenue source should have a corresponding cost of goods sold line to accurately reflect the expenses related to each revenue source.