Answer:
The correct answers are:
a - Direct cost
b - direct cost
c - indirect cost
d - indirect cost
e - indirect cost
f - direct cost
Explanation:
On the one hand, the term of "direct cost" in the field of management and accounting refers to the type of cost that is directly associated with the production of a good in particular. So that basically means that a direct cost of a product is something that was extremely necessary to use in the production of it or in the other case it could not have been made.
On the other hand, the term of "indirect cost" refers to the whole opposite concept, meaning that the indirect cost will be those who can not be directly associated with a product or its production but instead it is implicated actually with a whole other activites in the company, such is the case of the electricity of the building.