Boxes of different sizes are stacked to create a small sculpture. the openings of the boxes are all similar rectangles. the bottom edge of the smallest rectangular opening 3 centimeters, while the bottom edge of the largest rectangular opening is 9 centimeters. the perimeter of the smallest rectangular opening is 15 centimeters what is the perimeter of the largest rectangular opening?

i’ll put you as brainliest
a) 90 cm
b)42cm
c) 45 cm