what is the scale factor of Triangle ABC to Triangle DEF?A. 3 B. 1/2C. 2D. 1/3

If we have the triangle ABC and we want to obtain the triangle DEF, we need to multiply every side of the triangle ABC by 3 as:
5 * 3 = 15
4 * 3 = 12
3 * 3 = 9
So, the scale factor of triangle ABC to triangle DEF is 3
Answer: 3