Consider the bar chart and answer questions based on it.
The bar chart represents sales of four companies C1, C2, C3 and C4 (in millions) for the year 2012, 2013 and 2014.
Sale of C3 in 2012 = 125
Sale of C3 in 2013 = 130
Sale of C4 in 2012 = 100
Sale of C4 in 2013 = 110
So, sale of C3 and C4 increase from 2012 to 2013.
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