Refer to the exhibit.

The exhibit shows a set of ornamental garden stairs going up to a walkway as part of a landscaping design.
You need to make sure that the edge of the top step in shown in a different linetype, as shown by the dashed line in the exhibit.
Which prompt in the OFFSET command should you use?
Select an option, then click Submit answer.
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Through
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Current
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Erase
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Source