Production estimates for August are as follows: Estimated inventory (units), August 1 Desired inventory (units), August 31 Expected sales volume (units), August For each unit produced, the direct materials requirements are as follows: Material A ($5 per lb.) Material B (518 per lb.) 12,000 9,000 75,000 3 lbs. 1/2 lb. The total direct materials purchases (assuming no begiming or ending inventory of material) of Materials A and B required for August production is O a. $1,080,000 for A: $1,296,000 for B O b.$1,125,000 for A: $675,000 for B Oc. $1,080,000 for A: $648,000 for B Od $1,170,000 for A: $702,000 for B