What has many keys but can’t open a single lock?

Question 3 of 5
What has many keys but can’t open a single lock?
Answer 3 – (D) Piano
Amazon Funzone Riddles Solve And Win Quiz All Answers Today
Answer 1 – (D) All of them
Answer 2 – (C) Darkness
Answer 3 – (D) Piano
Answer 4 – (C) Book
Answer 5 – (D) Queue