A container contains 20 liters of milk, From this container 2 liters of milk was taken out and replaced by water. This process was repeated further 2 times. How much milk is now contained by the container?
Select the correct option:
A) 14.58 liters
B) 20.16 liters
C) 22.45 liters
D) 26.95 liters
E) 31.45 liters

Rationale: "amount of milk left after 3 operations = 20 ( 1 - 2 / 20 ) ^ 3 = 20 * 9 / 10 * 9 / 10 * 9 / 10 = 14.58 liters answer is a"
Answer: A