I was just in the same situation, you got this. the answer is A.
Answer:
1/4
Step-by-step explanation:
I'm not sure if he wants the Dilution factor or the scale but anyway
CBA = 4 C'B'A'
Scale 1/4
![\frac{ 3^{4} }{ 3^{2} }](https://tex.z-dn.net/?f=%20%5Cfrac%7B%203%5E%7B4%7D%20%7D%7B%203%5E%7B2%7D%20%7D%20)
First, take about the
![3^{4}](https://tex.z-dn.net/?f=%203%5E%7B4%7D)
and
![3^{2}](https://tex.z-dn.net/?f=%203%5E%7B2%7D%20)
![\frac{3 x 3 x 3 x 3}{3 x 3}](https://tex.z-dn.net/?f=%20%5Cfrac%7B3%20x%203%20x%203%20x%203%7D%7B3%20x%203%7D%20)
You can cancel out the two 3's on the bottom using two of the threes from the numerator
![\frac{3 x 3}{1}](https://tex.z-dn.net/?f=%20%5Cfrac%7B3%20x%203%7D%7B1%7D%20)
Simplify the fraction
3 x 3 Multiply
9