Before the DVD,the VCR Was a Popular Format for Taping

question 82

Multiple Choice

Before the DVD,the VCR was a popular format for taping and replaying video.When the DVD was introduced,which of the following most accurately describes the long-run adjustment process in the VCR industry?

• A) Costs increased, price increased, demand decreased, quantity decreased, profit decreased.
• B) Demand increased, costs increased, price increased, quantity increased, profit decreased.
• C) Demand decreased, quantity decreased, price decreased, profit decreased.
• D) Demand decreased, price decreased, quantity decreased, profit decreased.

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Definitions:

(S)-glyceraldehyde

The S-configuration enantiomer of glyceraldehyde, which serves as a standard for determining the absolute configuration of chiral molecules.

(R)-glyceraldehyde

A carbohydrate that is the R-enantiomer of glyceraldehyde, serving as a simple monosaccharide and a basic building block for more complex sugars.

(-)-glyceraldehyde

A specific stereoisomer of glyceraldehyde, a simple sugar molecule that serves as an intermediate in several metabolic pathways.

(+)-glyceraldehyde

An enantiomer of glyceraldehyde, denoted as having a positive optical rotation; it is a simple sugar and plays a role in several metabolic pathways.