Walmart Inc. had the following information for the year 2023:

• Total Assets: $410 billion
• Total Liabilities: $190 billion
• Shareholders' Equity: $220 billion Calculate: a) The debt-to-equity ratio. b) The return on assets (ROA) if the net income for the year is $16.5 billion. c) The current ratio if the current assets are $180 billion and the current liabilities are $90 billion.