In which type of comparisons are the ratios of one year compared to the historical ratios of the company? (a) Comparisons against a competitive benchmark. (b) Comparisons against rules of thumb based...

In which type of comparisons are the ratios of one year compared to the historical ratios of the company? (a) Comparisons against a competitive benchmark. (b) Comparisons against rules of thumb based on industry-wide experience. (c) Time-series comparisons. (d) Cross-sectional comparisons.