Sugar Manufacturers Have Been Steadily Losing Business as a Result

Multiple Choice

Sugar manufacturers have been steadily losing business as a result of increasing use of high-fructose corn syrup in processed foods. However,sugar sales are beginning to increase again in recent months. This example most closely demonstrates which of Porter's Five Forces?

A) Bargaining power of suppliers
B) Bargaining power of consumers
C) Rivalry among competitors
D) Threat of new entrants
E) Threat of new substitutes