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Which of the following is a similarity between managerial and financial accounting? a. Both financial and managerial accounting are concerned with the firm as a whole. b. Both managerial and financial accounting are concerned with the continuance of the enterprise as a whole only. c. Consistency is useful in both internal and external reporting. d. The cost concept is fundamental in both managerial and financial accounting, that is, they both make use of different cost concepts for different purposes