The following table shows the number of delivery partners [in thousands) who joined five different companies during six different years.

Find the ratio of the number of delivery partners who joined Clipkart (in 2019 and 2020) to the number of delivery partners who joined Tomato (in 2019 and 2020)

A

4 : 3

B

3 : 2

C

1 : 2

D

2 : 1