Which of the following is not a valid SQL statement? (refer to the tables in the JustLee Books database.)a. SELECT MIN(pubdate)FROM booksGROUP BY categoryHAVING pubid = 4;b. SELECT MIN(pubdate)FROM booksWHERE category = 'COOKING';c. SELECT COUNT(*)FROM ordersWHERE customer# = 1005;d. SELECT MAX(COUNT(customer#))FROM ordersGROUP BY customer#;

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