Which statement is true about encrypted fields (such as Credit Card Number) in Saved Searches?

Which statement is true about encrypted fields (such as Credit Card Number) in Saved Searches?
A . Encrypted fields can only be displayed in their encrypted format.
B . Encrypted fields cannot be included in Saved Search results.
C . Encrypted fields can be used as summary criteria.
D . Encrypted fields can be included in search criteria with a limited set of operators.

Answer: D