What should be the ideal NPK ratio for cereals

Your answer is correct

Oops! you choose the wrong answer.

None of the selected answer is correct. You choose {{TotalAttempted.totalAttempted}} answers and {{TotalAttempted.totalCorrect}} is correct. You choose {{TotalAttempted.totalAttempted}} answers and {{TotalAttempted.totalCorrect}} are correct.

You've not selected any answer.