Answer:
Part A) Is False
Part B) Is True
Step-by-step explanation:
we know that
the scale factor is equal to divide the length of the corresponding side of the second triangle by the length of the corresponding side of the first triangle
Let
z-----> the scale factor
x-----> the length side of the second triangle
y------> the length side of the first triangle
so

In this problem we have


substitute

------> is an enlargement
Verify the statements
Part A) the scale factor is 
The statement is false, because the scale factor is 
Part B) the scale factor is 
The statement is True -----> see the procedure