Caitlin solved the equation, 4(n−2)=12, for n. When she submitted her work, her teacher said that one of her justifications was incorrect. In which step is Caitlin's justification incorrect?

Step 1
Step 2
Step 3
Step 4

Step Justification
1. 4(n−2)=12
Given
2. 4n−8=12
Distributive Property
3. 4n=20
Subtraction Property of Equality
4. n=5
Division Property of Equality

Please help. if you arent SURE if the answer is correct please make sure its right before answering. this is a big test