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: childs fold out couch bed
Product list:
A: Costzon Kids Sofa, 2 in 1 Double Sofa Convert to Table and Two Chairs, Toddler Lounge with Wooden Frame and PVC Surface, Children Boys Girls Couch Armrest Chair Double Seats with Storage Space (Red)
B: Costzon Kids Sofa, with 2 Cute Strawberry Pillows, Children Couch Armrest Chair Double Seats, Toddler Lounge Bed 2 in 1, Wooden Frame and Coral Fleece Surface for Bedroom, Living Room, Baby Room(Pink)
Answer: B,A