A firm has $200,000 to spend on either direct sales or advertising. Suppose further that if the $200,000 is spent on direct sales, it will bring in an accounting profit of $40,000. Instead, the (accounting) profit it could obtain from a $200,000 investment in advertising is $X. Compare the profitability of the two options if (a) X = 50,000, (b) X = 30,000, or (c) X = 40,000.