Task: Question Answering
Input (English): Question: A school having four classes only have student strength of 10, 20, 30 and 40 respectively. The pass percentages of these classes are 80%, 30%, 60% and 90% respectively. What is the pass percentage for the entire school?

 Option A: 56%

 Option B: 76%

 Option C: 34%

 Option D: 68%

 Option E: 46%
Output (English): Option D