Answer:
T-Shirts $ More Shop: Final cost = 2m + 12
m = mug
You Say It, We Print It: Final Cost = 5m
If you buy 5 mugs from both place:
2 * 5 = 10
10 + 12 = 22
$22 for T-Shirts & More
5 * 5 = $25
$25 from You Say It, We Print It
D. T-Shirts & More is the better buy if you buy more than 4 mugs.