Paying off accounts payable from cash lowers current assets and current liabilities by the same amount. Because the current ratio started off above 1, the current ratio will increase. Because the quick ratio started off less than 1, it will decrease further. The other choices are incorrect. Buying fixed assets on credit decreases both ratios because the denominator increases, with no change to the numerator. Using cash to purchase inventory would result in no change in the current ratio but would decrease the quick ratio by decreasing the numerator.