What is the effect of a 3% reduction in cost of goods sold (COGS) on pre-tax earnings? Complete the following table. Earnings and Expenses Current After 3% Reduction in COGS Sales 236500 AED 236500 AED COGS 210000 AED Pre-tax Earnings 25500 AED d. there is not enough information to determine the effect on pre-tax earnings c. pre-tax earnings increase by 7300 AED a. pre-tax earnings increase by 2300 AED b. pre-tax earnings increase by 5700 AED