What is the scale factor from ABC to DEF?
A. 2
B. 1/2
C. 3
D. 1/3

Answer:
as ABC = 3* DEF
AB = 5
DE = 15 = 5*3
AC = 3
DF = 9 = 3*3
BC = 4
EF = 12 = 4 * 3