The ratio of current assets and current liabilities at BHP is equal to 3. Suppose current assets and current liabilities increase by the same dollar amount. Consider the following statements: (I) net working capital increases (II) net working capital is unchanged (III) current ratio increases (IV) current ratio decreases Which of the following statements is correct? (I) and (III) are both true (II) and (III) are both true (II) and (IV) are both true (I) and (IV) are both true