单项选择题

A.To help the technician learn how to perform the task ……

Which of the following reasons indicate why it is important to have the user demonstrate the task they are trying to perform?（）

A.To help the technician learn how to perform the task
B.To determine if the user is performing the task properly
C.To determine if the user is authorized to perform the task
D.To help the technician determine if there is a better way to perform the task in question

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