Choose the packing that results from the use of the first-fit (FF) bin-packing algorithm to pack the following weights into bins that can hold no more than 8 lb. 5 lb, 7 lb, 1 lb, 2 lb, 4 lb, 5 lb, 1 lb, 1 lb, 3 lb, 6 lb, 2 lb a. 2 5 5 a b 2 4 2 3 5 6 2 b. 2 1 5 5 7 3 4 6 2 2 5 2 4 5