When closing out the Variable Overhead accounts, the Spending Variance was CR and the Efficiency Variance was DR. What would this mean? Assume the cost driver was machine hours. Question 4 options: We were inefficient with our machine hours and the cost on a machine hour basis was higher than expected. We weren't as efficient with our machine hours, but the machine costs on a per hour basis were lower than expected. We were efficient with our machine hours and the cost on a machine hour basis was lower than expected. We were more efficient with our machine hours, but the machine costs on a per hour basis were higher than expected