Which scenario should be escalated as potentially suspicious activity?

Which scenario should be escalated as potentially suspicious activity?
A . A retail chain deposits cash into several operating accounts and consolidates the funds into one account.
B. A domestic business account receives a wire transfer from an international business with no history of such activity or business needs.
C. A convenience store makes daily deposits or withdrawals primarily in cash.
D. A corporate account deposits large checks and wire transfers on a frequent basis from existing customers.

Answer: B

Explanation:

Reference: https://www.utica.edu/academic/institutes/ecii/conferences/Conducting%20a%20Money%20Laundering%20Investigation%20-%20C%20King.pptx