An overhead rate for each department is computed by: O a. adding alocated service costs to the overhead costs that are directly traceable to the producing department and dividing this total by the measure of activity for that O b dividing the difference of actual overhead costs of a production department and the allocated service costs to that department by the measure of activity for that O c. dividing the product of the measure of activity for a producing department and the allocated service costs that are directly traceable to the producing department by O d. dividing the allocated service costs of a producing department by the overhead costs that are directly traceable to the producing department and multiplying the department. the directly traceable overhead costs. result by the measure of activity for that department The rice milling process of Zigma Enterprises yields 6,000 pounds of rice grain and 2,000 pounds of hay. The rice grain receives 75 percent of the joint cost and the hay receives 25 percent. Which of the following allocation methods is used by Zigma to allocate the joint costs of cultivating rice? O a. The physical units method b. The sales-value-at-spit-off method O c. The constant gross margin percentage method O d. The net realizable value methord