Q: This task is about creating an unanswerable question based on a given passage. Construct a question that looks relevant to the given context but is unanswerable. Following are a few suggestions about how to create unanswerable questions:
(i) create questions which require satisfying a constraint that is not mentioned in the passage
(ii) create questions which require information beyond what is provided in the passage in order to answer
(iii) replace an existing entity, number, date mentioned in the passage with other entity, number, date and use it in the question
(iv) create a question which is answerable from the passage and then replace one or two words by their antonyms or insert/remove negation words to make it unanswerable.
Passage: As of 2012, quality private schools in the United States charged substantial tuition, close to $40,000 annually for day schools in New York City, and nearly $50,000 for boarding schools. However, tuition did not cover operating expenses, particularly at boarding schools. The leading schools such as the Groton School had substantial endowments running to hundreds of millions of dollars supplemented by fundraising drives. Boarding schools with a reputation for quality in the United States have a student body drawn from throughout the country, indeed the globe, and a list of applicants which far exceeds their capacity.
A:
How much did the Groton School charge per student for tuition in 2012?