You are creating a deep neural network classification model using a dataset with categorical input values. Certain columns have a cardinality greater than 10,000 unique values. How should you encode these categorical values as input into the model?

A. Convert each categorical value into an integer value. B. Convert the categorical string data to one-hot hash buckets. C. Map the categorical variables into a vector of boolean values. D. Convert each categorical value into a run-length encoded string.