Netzone Company is in semiconductor industry and fabrication of silicon-wafer chips splits off two types of memory chips, Standard and Premium. The following information was collected for last quarter of the calendar year Direct materials processed400 ks Both standard and premium chips weigh 20 grams each) Production Standard Premium Standard Premium 13,000 chips 7,400 chips 12,600 at $190 per chip 7,000 at $240 per chip Sales: The cost of purchasing 400 kgs of direct materials and processing it up to the split-off point to yield a total of 20,400 chips of good products was $2,020,000. Beginning inventories totalled 130 chips for Standard and 60 chips for Premium. Ending inventory amounts reflected 130 chips of Standard and 60 chips of Premium, October costs per unit were the same as November. What are the physical-volume proportions for products Standard and Premium, respectively? 50.00% and 50.00% 63.73% and 36.27% 64.29% and 35.71% 66.33% and 33.67% O A. O B. C. D