Sara is buying apple juice.
A regular carton is 600 ml.
She has 3 options.

Option 1: Regular carton, 15% off the regular price
Option 2: 30% more juice than regular carton, regular price
Option 3: 25% more juice than regular carton, 9% off regular price

Given that regular price is £1, find the cost of 1 ml of juice for each option.
Give your answers to 2 dp.
Determine which option is the best value and write this in the comment box.