You are presented with four possible sets of images with one option blacked out. 
### Your task is to:
- Identify the sets in which all visible images still follow the described idea of an odd one out problem.
- Identify the set that does not contain an odd-one-out image by its letter (A, B, C, or D).
- On a scale of 0 to 1, indicate how confident you are in your answer.
- Explain briefly your reasoning.

** Only use information provided in the images. Do not infer any hidden rules, patterns, or details not explicitly stated.
Answer in less than 500 words.**
