Which of the following statements is true?

		a. Trade discounts and sales returns and allowances are listed on the income statement as deductions from gross sales.
		b. Reports to shareholders often omit the details of revenue and show only net revenue.
		c. Cash Discounts on Sales are listed on the income statement as an expense of doing business.
		d. "Turnover" is commonly used in the United States to refer to net sales revenue.
		e. Cash discounts must appear on cash flow statements.