Comprehension Passage
Direction: Study the following graph carefully and answer the questions that follow.
Three Different Products (in thousands) Produced by a Company in Five Different Years
What was the respective ratio between the number of CDs in 2007, Pen-drives in 2008 and Key boards in 2009 produced by the company respectively?
1
5 : 6 : 4
2
4 : 5 : 3
3
4 : 6 : 3
4
5 : 7 : 4
5
None of these