In the fiscal year ended December 31, 2023, Coca-Cola, the renowned beverage giant, disclosed the following financial information:

• Total assets amounted to $90,000,000, including current assets of $30,000,000.
• Liabilities stood at $50,000,000, with $15,000,000 classified as current liabilities.
• Shareholders' equity totaled $40,000,000.
• Net income for the year reached $10,000,000.

Calculate: a) Current ratio. b) Debt-to-equity ratio. c) Return on equity. d) Earnings per share (assuming 10,000,000 outstanding shares).