Al-Qubas LLC, Ruwi produces toys for national distribution. The management has recently established a standard cost system to control costs. The following information related to Al-Qubas LLC during the year 2019 are as follows: Quantity of material purchased Value of material purchased Standard quantity of material required per tonne of output Standard rate of material Opening stock of materials Closing stock of material Output during the period = 3,000 units = OMR 9,000 = 30 units = OMR 2.50 per unit =Nil - 500 units -80 tons The management of Al-Qubas LLC wants to take important decision on materials based on the variances. Hence, the management asked you to compute all material variances and state the significance of each calculated variance for taking best decision. A. Following are some of the main products produced by selected industries. The same industries are also producing joint products. You are asked to identify the possible joint products at the split-off point in the operation of each industry. How would you identify the joint products? Explain. i. Coal ii. Petroleum iii. Cocoa beans iv. Lamb V. Salt