Task: Question Answering
Input (English): Question: In a mixture of 60 liters, the ratio of milk and water is 2:1. What amount of water must be added to make the ratio of milk and water as 1:2?

 Option A: 20 liters

 Option B: 30 liters

 Option C: 60 liters

 Option D: 38 liters

 Option E: 40 liters
Output (English): Option C