The option that violates the 1NF rules of normalization is that B. Some cells of the table have multiple values.
This is a normalization form that calls for the deletion of groups of data that are repeating to ensure that redundant data is removed.
If some cells of a table have multiple values therefore, it would mean that there are repeating data which will violate the 1NF rule.
In conclusion, option B is correct.
Find out more on normalization at https://brainly.com/question/25766696.