Please answer each multiple choice

This financial ratio is a measure of the opportunity cost, if an organization uses their own cash resources to finance operations. Revenue to Equity Ratio Debt to Equity Return on Assets Fixed Asset Ratio This financial ratio measures the level of revenue supported by each $1 of equity Revenue to Equity Ratio Debt to Equity Ratio Return on Equity Return on Assets Which financial ratio measure the collection period? Accounts Receivables to Equity Days in A/P Days in A/R Operating Cycle