Samir incorrectly found the distance between -17 and 4 by following these steps:

Step 1: |4 – (-17)|
Step 2: |4 + 17|
Step 3: |21|
Step 4: The distance between -17 and 4 is -21.

In which step did Samir make a mistake?
A) Step 1
B) Step 2
C) Step 3
Eliminate
D) Step 4