You are required to prepare 2x10 5 yd 3 of fill material with a 95 % degree of compaction and an OMC of 10%. Borrow pit A offers a soil with a natural unit weight of 115 pcf, maximum dry unit weight of 112 pcf, natural moisture content of 22%, specific gravity of 2.7, and an average cost of $0.5/yd 3. Borrow pit B offers a soil with a natural unit weight of 120 pcf, maximum dry unit weight of 115 pcf, natural moisture content of 20%, specific gravity of 2.7, and an average cost of $0.6/yd 3. Which offer is less expensive?