Instruction: Rank the products A, B, C, ... based on their relevance to the provided query, and produce a ranked list with the most relevant product positioned at the top of the list.

Input:
Query: split cal king mattress
Product list:
A: ZINUS 5 Inch Metal Smart Box Spring / Mattress Foundation / Strong Metal Frame / Easy Assembly, California King
B: iDealBed 4i Custom Adjustable Bed Base, Wireless, Massage, Dual USB Charge, Nightlight, Zero-Gravity, Anti-Snore, Memory Pre-Sets, Zero Clearance (California King)
C: Best Price Mattress 12 Inch Memory Foam Mattress, Calming Green Tea Infusion, Pressure Relieving, Bed-in-a-Box, CertiPUR-US Certified, Cal King
Answer: B,C,A