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Planning Systems, Inc. has forecast the following unit sales and production for the next year, by quarter: 1st and 3rd 4th Production 150 160 140 100 Sales 120 140 150 120 The firm has beginning inventories as follows: Finished goods 50 units Direct material A 100 Direct material B 100 A finished unit requires one unit of material A and two units of material B. There should be enough material on hand at the end of each quarter to meet 20% of the next quarter's production needs. There are no work-in-process inventories. How much material A must be purchased in quarter 2? Select one: O A. 138 O B. 142 O C. 156 O D. 162