Sparkling drink COCA COLA ZERO, 330 ml or Carbonated drink COCA COLA ZERO, 500 ml?

Energy 1 kcal 0 kcal
Fat 0 g 0 g
of which saturates 0 g 0 g
Carbohydrate 0 g 0 g
of which sugars 0 g 0 g
Protein 0 g 0 g
Salt 0 g 0 g

Figures from the product labels. Green is the better value.

Sparkling drink COCA COLA ZERO, 330 ml
C
Sparkling drink COCA COLA ZERO, 330 ml
1 kcal
Sat. fat 0 g Sugars 0 g
330 ml
Carbonated drink COCA COLA ZERO, 500 ml
A
Carbonated drink COCA COLA ZERO, 500 ml
0 kcal
Sat. fat 0 g Sugars 0 g
500 ml