Study the following table and answer the question:
Number of students Appeared (A) and Passed (P) in an annual examination from four schools Q, R, S & T in five years (2014 to 2018)

The ratio of the total number of students appeared from school Q in 2017 and from school S$ in 2018 to the total number of students passed from school R in 2018 and school T in 2014, is:

A

16:9

B

25:21

C

5:7

D

7:8