Q: The coal miners' day is celebrated on ___________ to appreciate the hard work of some of the greatest unheard heroes of the Industrial Revolution.

• A. 2021-05-01 00:00:00
• B. 2021-05-02 00:00:00
• C. 2021-05-03 00:00:00
• D. 2021-05-04 00:00:00