Instruction: Evaluate the relevance of each product title in the input to the given query, and then sort the products in descending order of relevance, placing the most relevant product at the top of the ranked list.

Input:
Query: a7r iv
Product list:
A: Sony a7R IV Full-Frame Mirrorless Interchangeable Lens Camera Body ILCE-7RM4 61.0MP Filmmaker's Kit with DJI Ronin-SC 3-Axis Handheld Gimbal Stabilizer Bundle + Deco Photo Backpack + 64GB + Software
B: PCTC Skidproof Camera Bracket Holder Base Hand Grip Quick Release Heavy L Plate Bracket Set Compatible for Sony Alpha ILCE9M2 a9 II a92 A7R IV a7r iv A7R 4 Camera Replace Attachment Grip
Answer: A,B