For 32-inch LED in 2017 sale is 175 and in 2013 it is 112, so clearly it is percentage increase from 2013 to 2017.
Therefore, formula for percentage increase is:
Increase = New number - Original number
Percentage increase = Increase ÷ Original number * 100
%increase= (175-112)/112*100
Therefore it is 56%.
Hence option B is correct.