Task: Question Answering
Input (English): Question: In an examination, 20% of total students failed in Hindi, 70% failed in English and 10% in both. The percentage of these who passed in both the subjects is :

 Option A: 10%

 Option B: 20%

 Option C: 30%

 Option D: 40%

 Option E: 50%
Output (English): Option B