Dear Learner, Can you find the solution to the question? 2/3 , | Unacademy Defence Shaurya

Dear Learner,
Can you find the solution to the question?
2/3 , 4/7, ..... 11/21, 16/31?
1. 6/11
2. 5/9
3. 9/17
4. 7/13
If you're not able to find the answer to this question, then check out the solution on Ask a Doubt
https://unacademy.onelink.me/HrwS/w1lrwcms