Sex Education on Netflix

Hello, I would like to tell you a fun fact about season 1 episode 4 of the Netflix series "Sex Education".

At the 5 minute and 56 second mark of episode 4, the school principal, character name Mr. Groff and his son, character name Adam Groff, are sitting in the principal's office talking about the son's bad grades on his exams. The exam paper "Tudor Test" first question was about the Yorkshire Rebellion 1489. I looked on wikipedia and the answer is letter D.