Instruction: Analyze the query and product title to determine the relevance between the query and product, and select the appropriate option from the provided options.

Input:
Query: #10 window envelopes without plastic
Product: Blue Summit Supplies 500#10 Single Window Security Envelopes Flip and Seal, Designed for QuickBooks Invoices and Business Statements, Number 10 Size 4 1/8 X 9 1/2, 500 Pack

Options:
A: The product is relevant to the query, and satisfies all the query specifications.
B: The product is somewhat relevant. It fails to fulfill some aspects of the query but the product can be used as a functional substitute.
C: The product does not fulfill the query, but could be used in combination with a product exactly matching the query.
D: The product is irrelevant to the query.
Answer: D: The product is irrelevant to the query.