Answer:
Yes, they need to increase Upper L which would cause MP Subscript Upper L to decrease and MP Subscript Upper C to increase.
Explanation:
In the specific problem outlined above, the company wants to maximize its revenue and ensure that the production cost is as low as possible for the given quantity of land, cement and the available labor. In order to ensure that this is possible, the company must try to increase the upper L so that there would be an increase in MP (subscript upper C) and a decrease in MP (subscript upper L).