Given Only the Following Excerpt of an E-R Model

question 34

Multiple Choice

Given only the following excerpt of an E-R model:
Which of the following is known to be true?

• A) A single instance of ENTITY A must be related to one instance of ENTITY B.
• B) Many instances of ENTITY A may be related to one instance of ENTITY B.
• C) ENTITY B has a degree of many.
• D) ENTITY B is a weak entity.
• E) Both A and C are true.

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Definitions:

Average Total Cost

The total cost of production (fixed and variable costs combined) divided by the total quantity of output produced.

Average Variable Cost

Average variable cost is the total variable cost of production divided by the number of units produced, indicating the variable cost per unit.

Average Variable Cost

The total variable costs (costs that change with production volume) divided by the number of units produced.