What is the appropriate action to take?

A consultant is creating a Churn Prediction model to identify customers who are not likely to renew their contract.

What is the appropriate action to take?
A . Replace nulls in the Churn Reason filed as ‘No reason given’’,
B . Exclude active customers (customer who have not churned) from the training dataset since their Churned) from the training dataset since their Churn Reason field are nulls.
C . For the Churn Reason field, enable the ‘’This variable contains sensitive data’’ box because it may contain sensitive customer behavior.
D . Exclude the Churn reason field from the dataset.

Answer: C