Answer:
B is the correct answer.
Explanation:
A single business strategy exists in a company when a company is deriving 95 percent of its revenue from one business activity. If the percentage of revenue from single business activities decreases it is said to be diversifying its strategies. The companies deriving less than 70 percent of its revenue from one activity and its activities are unrelated to each other is a diversified company. There are inherent risks in a single business strategy as negative events could affect the entire business.