Q.

Which of the following describes the Command pattern correctly?

A. in this pattern a class represents functionality of another class.
B. this pattern creates a chain of receiver objects for a request.
C. this pattern provides a way to evaluate language grammar or expression.
D. in this pattern a request is wrapped under an object as command and passed to invoker object.
Answer» D. in this pattern a request is wrapped under an object as command and passed to invoker object.
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