[单选题]<img style="max-width: 100%;" src="https://file.gaojiufeng.cn/learnAppQuestion/1a/04/1a0417189b27af50e8968db26242023b.jpg"><img style="max-width: 100%;" src="https://file.gaojiufeng.cn/learnAppQuestion/78/43/7843c8440ca055007775f122c6f76209.jpg">Why does David Harvey believe directors are important in small companies? A They are responsible for staying ahead of competitors. B No one else takes part in the decision-making. C Their style directly affects all the staff.