Given a math problem with context and a question and 5 answer choices, the task is to provide the correct answer choice based on the problem. You must choose one of the given answer choices by letter: a, b, c, d, or e; anything else is invalid.
Q: Problem: in a can, there is a mixture of milk and water in the ratio 4: 5. if it is filled with an additional 6 litres of milk the can would be full and ratio of milk and water would become 6: 5. find the capacity of the can ?
Options: a. 33, b. 44, c. 48, d. 52, e. none of these
A:
a