When you see relevant range in managerial accounting, it means: A. A range of surviving period that a company could maintain it operation. B. A range where relevant cost incurred. C. A range in which a relationship between dependent factor and independent factor is valid D. A range where cost fluctuate because of change in activity level. Golden Corporation is an automobile manufacturer. A customer book a business car and recently requires to upgrade leather seats to a customized high-end seats to meet his needs. As known, it took extra 40 labor hours of an employee. So how Golden Corporation classified the payment for the employee? Direct Costs Value-adding costs A. Yes Yes B. Yes No C. No Yes D. No No