5 pts ID Question 29 Greyhound Scooters Inc. has three product lines. The president of Greyhound is curious about the effect of discontinuing a product line on the company's future profitability. The best number for the president to look at to determine the effect of discontinuing a product line on the company's overall profits would be the product line's: o Contribution margin O Contribution margin minus an allocated portion of common fixed costs. Segment marein O Gross profit minus an allocated portion of common fixed costs Segment margini minus an allocated portion of common fixed costs