The given bar graph shows the sales of sacks of cement (in thousand numbers) from five different companies A, B, C, D and E in the years 2017 and 2018.
What is the ratio of the total sales of company D for both the years to the total sales of A for both the years?
1
31 ∶ 29
2
35 ∶ 29
3
29 ∶ 31
4
30 ∶ 29