this is a multi part question that is ok according to chegg, so answer all 3 questions and receive an upvote

Operating profit is calculated by O liabilities + owners' equity revenue - cost of goods sold O gross margin - operating expenses O EBIT - interest and taxes Net income is calculated by operating profit - interest expense - income tax expense O operating profit - EBIT O both of the above O neither of the above Operating margin is calculated by dividing operating profit by revenue dividing revenue by cost of goods sold dividing revenue by operating profit o multiplying revenue times operating profit