Observe the following diagram aplaining break-even analysis and answer the questions. 1200D HOEDDO O CAT 12 LV (a)At operating breakeven point explain why operating profit (EBIT) is zero? (b) Explain why fixed operating cost is a horizontal straight line? (c) Suppose the firm sellsmore than operating break even quantity (500 units), the operating profit will be positive or negative? Why? (d) Explain whytotal operating cost curve starts from the point S3000in Yaxis