Direction: Study the following bar graph and answer the question based on it.
The sales of books (in thousands) of five branches (C1, C2, C3, C4 and C5) of a publishing company in two consecutive years 2010 and 2011 are given.
Find the ratio of total sales of branch C2 in both the years and total sales of branch C4 in both the years?
1
196 ∶ 123
2
123 ∶ 196
3
167 ∶ 138
4
138 ∶ 167