If the images are displayed using 8-bits, then, what is the range of the value of an image if the image is a result of subtraction operation?

If the images are displayed using 8-bits, then, what is the range of the value of an image if the image is a result of subtraction operation? Correct Answer None of the mentioned

The range of a result of a subtracted image is -255 m inimum to 255 max imum, if 8-bit channel is used to display the original images.
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