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The correct answer is C.

OBJ-3.6: In this case, you should select a QR code to meet this requirement. A QR code is a square that contains a specific graphical pattern that can be read by a smartphone’s camera. When read, the graphical pattern is converted to data, such as a website address or link that can be easily opened. QR codes can also be read by dedicated QR scanners, as well.

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