Explanation
The correct answer is A because a SAR/STR narrative should be concise, clear, and complete, addressing the who, what, when, where, why, and how of the suspicious activity. Option B is incorrect because providing too much information can make the narrative confusing and irrelevant. Option C is incorrect because the introduction should provide a summary of the suspicious activity, not the conclusion. Option D is incorrect because suspect names should be mentioned in the narrative to identify the parties involved in the suspicious activity.
References: Advanced CAMS-FCI Certification Handbook, page 17; Leading Complex Investigations Certificate, Module 3.