please help me with these three questions

3 pointr Specialized materials are an example of a constrained resource. True False 21 Jpaints In dropping an unprofitable product or segment decisions, common (shared) fixed costs of an unproductive segment will be avoidable while direct fied costs won't be avoidable if that segment is dropped. True Fahse 3 points If a business is considering birying a new vehicle, the cost of the old vehicle is relevant to the business decision. True False