The following bar chart shows the number of students enrolled in two Summer Camps A and B from 2014 to 2019.
Study the chart carefully and answer the question that follows.

What is the ratio of the students enrolled in Camp A in 2014, 2016 and 2017 to the students enrolled in Camp B in 2015, 2018 and 2019?

A

18 : 13

B

22 : 15

C

13 : 18

D

15 : 22