Which statement is FALSE? a. Gross profit margin (GPM) will always be greater than operating profit margin (OPM). b. When it comes to liquidity ratios, most firms want to be average" don't try to maximize or minimize a firm's liquidity . C. The DuPont ratio analysis system ignores ratios that measure a firm's asset management. d . You should strive to maximize the fixed asset turnover ratio (FAT).