Question: Select the true statement about tf - idf wieght: Select one: A . idf have an no effect on ranking for one - term queries

Select the true statement about tf-idf wieght:
Select one:
A. idf have an no effect on ranking for one-term queries
B. idf affects the ranking of documents for queries with at least two terms
C. tf-idf Increases with the rarity of the term in the collection
D. all the mentioned are True

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