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?
a. the physical units method
b. the sales-value-at-spit-off method
c. the constant gross margin percentage method
d. the net realizable value methord