C

Step 1: The minimum deviation position of a prism occurs when the angle of incidence at both faces of the prism is equal, leading to the path of light being symmetric.
Step 2: In this position, the light rays are refracted at equal angles, which allows for the spreading of different wavelengths of light more evenly.
Step 3: This results in the formation of a more distinct and sharp spectrum, as each color is refracted at a slightly different angle due to its wavelength.
Therefore, the correct answer is that the images of the spectrum becomes distinct (Option C).