For Loji 1: 5 units \times RM1.00 = RM5.00
For Loji 2: 5 units \times RM0.90 = RM4.50
For Loji 3: 5 units \times RM1.00 = RM5.00
Now, add the costs of all three facilities to get the total cost.Total cost = RM5.00 + RM4.50 + RM5.00
Total cost = RM14.50
Therefore, the total cost at the production level of 5 units in the long run is RM14.50, but this option is not available in the given multiple-choice answers. It seems there might be an error either in the question's phrasing or the provided options.Email: camtutor.ai@gmail.com