Answer:
lowest
Step-by-step explanation:
In simple words, an RFM review determines which consumers are most likely to react to a new bid. Each consumer receives a three-digit RFM score (ranging from 111 to 555) as a result of the RFM review. A 555 means that a consumer has bought a service or product the most recently, consistently, and for the most money. Thus, Christopher should focus on lowest RFM score.