In which corporate structure would it be challenging to implement best practices and consistency in reporting, systems, definitions, and processes across the organization? Product/service structure. O Customer structure. Matrix structure. Geographic structure. What is a profit centre? O A business segment whose manager has control over cost but has no control over revenue or the use of investment funds. O A business segment whose manager has control over cost, revenue, and the use of investment funds. O A business segment whose manager has control over cost and revenue but has no control over the use of investment funds. A business segment whose manager has control over revenue but has no control over cost or the use of investment funds. Which cost is not an example of a variable cost? O Direct labour O Direct materials O Commission expense O Rent expense