单项选择题

A.AB.BC.CD.DYou plan to give an on-site presentation. T……

You plan to give an on-site presentation. The external display available for your audience is a 42-inch flat panel monitor. You need to ensure that the presentation on the monitor of your computer is duplicated on the external monitor for the audience.
What should you do?（）

A.A
B.B
C.C
D.D

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