The tables show the cost of different numbers of t-shirts ordered at two different stores, Store P and Store Q:
Which of these explains which store has a better buy? PICTURE BELOW
A- Store Q, because the ratio of the number to the cost is 1:6 in Store P and 1:5 in Store Q
B- Store Q, because the ratio of the number to the cost is 6:1 in Store P and 5:1 in Store Q
C- Store P, because the ratio of the number to the cost is 3:21 in Store P and 2:12 in Store Q
D- Store P, because the ratio of the number to the cost is 21:3 in Store P and 12:2 in Store Q