Given the following information, is purchasing performing well in buying iron castings? Price Paid To Supplier % Increase Iron Castings from PPI % Increase Sept 20, 2015 $52.50 =(53.20-52.50) 52.50 127.20 (127.5-127.2) 127.2 Dec 31, 2015 $53.20 1.333% (increase) 127.5 0.236% (increase) a. Fantastic job (i.e. you deserve a promotion) b. Terrible job (i.e. you deserve to get fired) c. Good job (i.e. you can keep job and you'll likely earn a bonus) d. Mediocre job (i.e. you will likely keep job but you won't receive bonus) e. You give up! You have no clue.