Four litres of paint are required for a job. The paint will be mixed in the proportion of 3 parts yellow to 5 parts white. How much of each colour is required? Select one: O a. 3 litres yellow, 5 litres white O b. 1 litre yellow, 3 litres white O c. 2 litres yellow, 2 litres white O d. 1.5 litres yellow, 2.5 litres white​