(B) 0 to 255
In the byte image format, pixel values range from 0 to 255, where each pixel is stored as a single byte (8 bits).
Source: Chapter 5, Section 5.5 Convolution
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The passage explicitly states: "pixels have values varying from 0 to 255 and the value of the pixel determines the color of that pixel." A byte (8 bits) can store 2⁸ = 256 values, i.e., 0 to 255. Option (B) is directly confirmed by the source. Remember: 0 = darkest (black), 255 = brightest (white/full color).