Answer:
None of the above.
Explanation:
Given,
The area of ground covered by each bag = 12x square feet,
Let A be the total area of the land,
So, the total number of bags required =


Also, the cost of each bag = 22 dollars,
So, the total cost to cover the ground ( say C ) = number of bags required × cost of each bag

For minimizing C we need the value of A,
Hence, none of the given options are correct.