An effective forecast model for a company includes: (Choose all correct answers) Understanding of the company's key products. Influence of the company's customers. Influence of the company's competitors. Influence of the company's suppliers. Understanding of the likely impact of relevant trends, such as economic conditions. Understanding of the company's key cost drivers. Understanding of the company's key revenue drivers. Influence of industry trends. Assessment of the company's management history, successes and failures. Understanding of the company's strategic position in its industry. Understanding of the likely impact of relevant trends, such as technological developments