Where Are Predefined Classes of User Interface Objects Readily Available

question 15

Multiple Choice

Where are predefined classes of user interface objects readily available?

• A) Class libraries
• B) Class modules
• C) Class models
• D) Class methods

---

Definitions:

Marginal Cost

Marginal cost is the cost of producing one additional unit of a product or service.

Average Variable Cost

The total variable costs divided by the quantity of output, measuring the per-unit variable cost of production.

Marginal Cost

The additional financial outlay required to produce one more unit of a good or service.

Marginal Cost

The expense incurred by the production of one extra unit of a product or service.