Answer:
The answer is fixed cost, product cost and indirect cost.
Step-by-step explanation:
A fixed cost is a cost that doesn't not change with output. Whether output increases or decreases, it wont change. The salary of a maintenance manager's salary is usually fixed cost. It is not a wage.
It is also a product cost and this is the costs incurred to create a product. Example is general and administrative expenses(factory maintenance manager's salary.)
And lastly, it is an indirect cost and this is cost that cannot be traced back to a single cost object. It is believed that the factory maintenance manager's work will not be only limited to one job.