Consider Classes A, B and C, Where a Is an Abstract

question 14

Multiple Choice

Consider classes A, B and C, where A is an abstract superclass, B is a concrete class that inherits from A and C is a concrete class that inherits from B. Class A declares abstract method originalMethod, implemented in class B. Which of the following statements is true of class C?

• A) Method originalMethod cannot be overridden in class C-once it has been implemented in concrete class B, it is implicitly final.
• B) Method originalMethod must be overridden in class C, or a compilation error will occur.
• C) If method originalMethod is not overridden in class C but is called by an object of class C, an error occurs.
• D) None of the above.

---

Definitions:

Total Costs Line

Represents the aggregate of all costs (fixed and variable) associated with the production of goods or services, often illustrated graphically in cost-volume-profit analysis.

Break-even Sales

Break-even sales represent the amount of revenue required to cover all fixed and variable costs, resulting in neither profit nor loss.

Unit Variable Costs

The costs that vary directly with the level of production or sales volume, such as materials and labor, calculated on a per-unit basis.

Break-even Sales

The amount of revenue from sales needed to cover all of a company’s operating expenses, resulting in neither profit nor loss.