One morning after purchasing 6 litres of milk from a milk man , a householder found that the weight of this quantity of milk was 6 .144 kg . If one litre of the pure milk weighs 1 .032 kg and that of one litre of the pure water 1 kg . then how much water was added to milk ?

• A. 0 .5 kg
• B. 1 .2 kg
• C. 0 .0 5 kg
• D. 1 .5 kg