Estimated sales of a product is 30000 units. Two kinds of raw materials X and Z are required for manufacturing the product. Each unit of the product requires 3 units of X and 3 units of Z. The estimated cost of the X and Z OMR 4 and OMR 5 respectively. The estimated opening balance in the beginning of the next year: finished goods: 4000 units; X: 6000 units; Z: 10000 units. The desirable closing balance at the end of the next year: finished product: 6000 units; X: 10000 units; Z: 12000 units. Which of the following shows the total cost of raw materials (OMR) to be purchased in Material Purchase Budget. Select one: a. X= 424000 and Z = 404000 b. P = 434000 and Q = 454000 c. X = 462000 and Z = 481000 d. X= 400000 and Z= 490000