A BlackBerry device user needs a colleague public certificate. What are two ways for the BlackBerry device user to obtain the colleague's public certificate if LDAP queries are failing? (Choose two.) | Blackberry

A. The colleague sends the user an encrypted message.
B. The colleague sends the user a signed message.
C. The colleague sends the user the public certificate.
D. The user performs an address book look up for the colleague.
E. The colleague's public certificate is resent from the BlackBerry Enterprise Server.

Answer: B,C