Which set of investigations is among the key duties of the Bureau of Diplomatic Security?

• A. Passport/visa fraud, cybercrime, threats against personnel, and money-laundering.
• B. Passport/visa fraud, cybercrime, threats against personnel, and counterfeiting of travel documents.
• C. Passport/visa fraud, counterfeiting of travel documents, threats against personnel, and cybercrime.
• D. Bank fraud, passport/visa fraud, and petty theft.

Answer: (C)