QUESTION 30 Spring Step Shoes employs a purchasing agent responsible for the acquisition of all materials used in the production process. Spring Step Shoes also has a human resources department responsible for hiring personnel and determining their compensation. The production supervisor would probably be held accountable for O material quantity and labor efficiency variances O labor rate and labor efficiency variances O material quantity and labor rate variances O material price and material quantity variances QUESTION 31 Which of the following is a False statement about CVP? The high-low method can estimate fixed and variable cost components if multiple observations of costs and activity levels are available. The difference between sales revenue and total fixed costs is referred to as contribution margin. Fixed costs per unit will change in response to changes in volume or activity level. Total variable costs will change in response to changes in volume or activity