What is the correct sequence of steps for titration of a commercial vinegar sample?

Step 1: Dilute the vinegar sample with volumetric material.
Step 2: Choose the appropriate indicator.
Step 3: Titrate the sample with NaOH 0.1N.
Step 4: Calculate the concentration of the sample.
a) 1, 2, 3, 4
b) 2, 1, 3, 4
c) 1, 3, 2, 4
d) 2, 3, 1, 4