Below are selected ratios for three companies which operate in three different industries:

Industry A B C

COGS/Sales 80% 58% n/a

R&D/Sales 0% 7% 0.1%

Advertising/Sales not defined 3% 0.1%

Internet/Sales 0.9% 1% 6%

Net Income/Sales 2.5% 10% 10%

Return on Assets 8.5% 10.6% 7.2%

Inventory Turnover 5.5 4 n/a

AR Turnover 100 6 9

Long-term Debt/Equity 60% 50% 40%

n/a = not available Identify which industry each of the companies A, B, and C operate in. Give two reasons for each of your selections.