To convert inches to centimeters, we can use the conversion factor 2.54 centimeters per inch.
To convert 5 inches to centimeters, we multiply 5 by the conversion factor:
5 inches * 2.54 centimeters/inch = 12.7 centimeters
Therefore, the metric equivalent of 5 inches is 12.7 centimeters.
The correct answer is C. 12.7.