The tables show the cost of different numbers of t-shirts ordered at two different stores, store c and store d: store c number of t-shirts cost (in $) 2 $12 4 $24 8 $48 store d number of t-shirts cost (in $) 3 $21 6 $42 9 $63 which of these explains which store has a better buy? store c, because the ratio of the number to the cost is 6: 1 in store c and 7: 1 in store d. store c, because the ratio of the number to the cost is 1: 6 in store c and 1: 7 in store d. store d, because the ratio of the number to the cost is 2: 14 in store c and 3: 24 in store d. store d, because the ratio of the number to the cost is 14: 2 in store c and 24: 3 in store d.