Which of the Following Best Illustrates a Vertically Integrated Company

Which of the following best illustrates a vertically integrated company with control?

A) Runners Corp., a shoe manufacturing company, which has a say in how much of its assets are divided among the company's shareholders
B) Blueberry Inc., a confectionery company, which has a stronghold over an important resource of the company that helps in differentiating its final product
C) Trendsetters LLC, an apparel manufacturing company, which has a stronghold over the number of employees that the company can afford to recruit, train, and retain
D) Coders Corp., a software development company, which successfully deflects any possibilities of hostile takeovers