Which of the Following Statements About Classes Is True

question 81

Multiple Choice

Which of the following statements about classes is true?

• A)You can create an object from a concrete class, but not from an abstract class.
• B)You can create an object from an abstract class, but not from a concrete class.
• C)You cannot have an object reference whose type is an abstract class.
• D)You cannot create subclasses from abstract classes.

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Definitions:

Marginal Utility

The added satisfaction a consumer gets from having one more unit of a good or service.

Demand Schedule

A table that lists the quantity of a good or service demanded by consumers at various price levels.

Marginal Utility Data

Information that quantifies the added satisfaction a consumer gains from consuming one more unit of a good or service.

Prices

The amount of money required to purchase goods or services, set by supply and demand in a market.