What Algorithm Is Used to Encrypt Credentials Stored Within Blue

What algorithm is used to encrypt Credentials stored within Blue Prism?

A) It always uses AES-256 and a key that is randomly generated when the Application Server restarts
B) It automatically uses the most cryptographically strong scheme that has been configured within the environment
C) It uses the algorithm and key defined on the encryption scheme that is currently selected as the Credentials Encryption Scheme
D) It uses the algorithm defined on the encryption scheme that is currently selected as the Credentials Encryption Scheme along with a key that is randomly generated when the Application Server restarts