Jamaal is using a photo-editing computer program. He sets up the "F1" key to perform a 20% enlargement in both dimensions. He sets up the "F2" key to increase the picture size by 2 cm in both dimensions. Then Jamaal sets up "F3" to do "F1" followed by "F2". What is the equivalent function for a picture x cm by x cm? A f3(x) = (f2(fi(x)) = 1.2x + 2 B f3(x) = (fi(f2(x)) = 1.2x + 2.4 C f3(x) = (f2 + fi) (x) = 2.2x + 2 D f3(x) = (f2 . fi) (x) = 1.2x2 + 2.4x