A predictive study showed that a company would gain a 10 percent market share if it reduced its product price by $5. The study assumed competitors would keep the prices of their products unchanged. Which of the following statements is true?
A. Market fluctuations make this study important for prediction.
B. A new study focusing on a smaller number of variables is required.
C. The research shows that the company should reduce its product price by $5.
D. Since the company can't control the price decisions of its competitors, the study isn't very useful.