The following line chart shows the expenditure on advertisement (in rupees thousand) and number of units (in lakh) sold by a company during the period 2010 – 2015. Study the chart and answer the question that follows.
The ratio of the expenditure on Advertisement for the years 2010 and 2014 is:
1
15 : 16
2
5 : 4
3
1 : 2
4
9 : 5