Task: Question Answering
Input (English): Question: An elevator starts with 5 pasengers and stops at 8 different floors of the house. Find out the probability of all the 5 passengers alighting at different floors.

 Option A: 90 / 512

 Option B: 105 / 512

 Option C: 15/512

 Option D: 30/512

 Option E: 48/512
Output (English): Option B