70-482 practice - PrepKeys

Q4 Single choice

You develop a Windows Store app that allows users to modify images by using filters and image-processing algorithms.

The app must meet the following requirements:

Use a web worker to initiate the image-processing algorithms on a separate thread.
Clean up the web worker after processing the algorithms.

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You need to ensure that the web worker releases memory after processing the algorithms.

What should you do?

A
From the calling page, call the postMessage() command with the terminate parameter.
B
From the calling page, call the postMessage() command with the clean parameter.
C
From the web worker, call the close() command.
D
From the calling page, call the postMessage() command with the close parameter.