Summarize your findings about the companys liquidity and solvency. Do you have any concerns about Costcos ability to meet its debt obligations?

Costco's liabilities-to-equity ratio decreased thus its solvency has declined.

Costco's times interest earned is high thus there is concern for Costco's solvency.

Costco's quick and current ratios slightly increased therefore its liquidity has declined.

Costco's times interest earned ratio is high thus solvency is not a concern for Costco.

Which one is correct?