The correct option is A 6000
Given: A container has a capacity of 6 times the unit of litre. This means, it has a capacity of 6 litres.
We know that, 1 litre = 1000 millilitre
∴ 6 litre =6×1000
=6000 millilitre.
∴ the capacity of container in millilitre is 6000.