Answer:
a. not only costs and revenues, but also assets invested in the center
Explanation:
A profit centre is defined as a segment of a company that is a standalone and determines the profit and losses of the entire company which are calculated seperately.
It also generates it's earnings and revenues independently.
The opposite of the profit centre is called the cost centre that does not earn any revenue but rather consumes revenue from other departments.
The profit centre also determines allocation of resources to various activities in the future.