Study the following information carefully and answer the questions given below. In a certain code language
‘Few organise farming techniques’ is written as ‘li gs da cr’
‘Fertilizer products few available’ is written as ‘fo pz nb gs’
‘Organise waste into fertilizer’ is written as ‘nb cr pt mk’
‘Disposal of farming waste’ is written as ‘h mk li yu’
Q. In the given code language, what does the code ‘yu’ stand for?