What is the purpose of the Logon Plugin Data Vault of the SAP Fiori Client?

What is the purpose of the Logon Plugin Data Vault of the SAP Fiori Client?
A . Prevent the access to all nonessential plugins
B . Provide a reusable component for storing sensitive information on the device
C . Allow a client policy that can be defined on the mobility platform
D . Enable secure and seamless handling of attachments

Answer: B