Instruction: Evaluate each product title in the given list, assess its relevance to the given query, and then arrange the products in descending order of relevance, with the most relevant product at the top of the ranked list.

Input:
Query: protect a bed mattress protector twin
Product list:
A: Protect-A-Bed 06914030 - AllerZip Smooth Twin 9"" 38"" x75 x9 10/Ctn, White
B: Twin Mattress Protector - Waterproof, Breathable, Blocks Allergens, Smooth Soft Cotton Terry Cover. The Premium Mattress Protector Will Surely Increase The Life of Your Mattress. (Twin)
Answer: A,B