Answer:
B. The ratio is getting worse because expenses are growing faster than sales.
Explanation:
OPERATING EXPENSES-COST TABLE
                 2012    2011     2010
Operating exp    48,000   44,000   42,000
Interest expense   12,000   9,000    6,000
TOTAL Â Â Â Â Â Â Â Â Â Â 60,000 Â 53,000 Â Â 48,000
As can be clearly seen above that operating expenses having been increasing at a very high speed as compared to sales volumes and gross profits hence, leading to a fall in overall profitability.