Question:Consider the following tables:
books
------
bookid
bookname
authorid
subjectid
popularityrating (the popularity of the book on a scale of 1 to 10)
language (such as French, English, German etc)
Subjects
---------
subjectid
subject (such as History, Geography, Mathematics etc)
authors
--------
authorid
authorname
country
Which is the query to determine the Authors who have written at least 1 book with a popularity rating of less than 5? 
A select authorname from authors where authorid in (select authorid from books where popularityrating<5) 
B select authorname from authors where authorid in (select authorid from books where popularityrating<=5) 
C select authorname from authors where authorid in (select bookid from books where popularityrating<5) 
D select authorname from authors where authorid in (select authorid from books where popularityrating in (0,5)) 
E None