If \DeltaΔABC ~ \DeltaΔDEF, what is the scale factor of \DeltaΔABC to \DeltaΔDEF?

Given:
ΔABC is similar to ΔDEF
Values of the corresponding sides are given.
To find:
The scale factor of ΔABC to ΔDEF.
Step-by-step solution:
Upon looking at the question figure we can say that:
The Side B