Indicate whether each of the following statements is true or false. a) A multistep income statement separates product from period costs. b) A single-step income statement shows the computation of gross margin. c) Interest is normally shown as a separate item on the multistep income statement. d) The treatment of interest on the multistep income statement is consistent with the treatment of interest on the statement of cash flows. e) Gains and losses are included in operating income on a multistep income statement.