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: piano keyboard for scholl
Product list:
A: Plixio 61-Key Digital Electric Piano Keyboard & Sheet Music Stand - Portable Electronic Keyboard for Beginners (Kids & Adults)
B: Color Piano Stickers for 88/76/61/54/49/37 Key Keyboards  Transparent and Removable: Made in USA
Answer: A,B