In a souvenir shop, jodi purchased 2 small picture frames and 1 large one for $28. mike bought 3 medium-size frames and 2 large ones for $56. shelly bought a small, a medium, and a large frame for $30. write and solve a system of equations to find the price of each size of picture frame.

a. small: 8
medium: 10
large: 12

b. small: 5
medium: 10
large: 15

c. small: 6
medium: 8
large: 16

d. small: 10
medium: 12
large: 15