Mathematics Quizzes Pie Chart

Directions:
The following pie-charts show the distribution of students of graduate and post-graduate levels in seven different institutes in a town.
Distribution of students at graduate and post-graduate levels in seven institutes:

Question:
What is the ratio between the number of students studying at post-graduate and graduate levels respectively from institute S?

Option A):
17 : 21
Option B):
19 : 21
Option C):
14 : 19
Option D):
19 : 14

Correct Answer is Option D):
19 : 14

Explanation: