Jaymilk is one of the leading milk export producers. The company has 2 variants of superior milk, namely mocha and green tea. Based on historical data, the R&D team has found that the profit per liter for each milk variant follows the following equation: mocha = $45 - 0,9x dan green-tea = $65 - 1,7y Where x is the number of liters of mocha milk produced and y is the number of liters of green tea milk produced. It takes 2 hours to produce 1 liter of mocha milk and 5 hours to produce 1 liter of green tea milk. With the current number of workers, the company has a total of 40 hours of work in a day, and all of them had to be used to create both variants. The company wants to know the optimal amount of milk that must be produced. a. How many liters of mocha milk and green tea should the company produce? b. What is the optimal value of the objective function based on your calculations? c. What is the value of the Lagrange multiplier and what does it mean?