Question: Tough and Tricky questions: Probability.
Medical analysts predict that one over five of all people who are infected by a certain biological agent could be expected to be killed for each day that passes during which they have not received an antidote. What fraction of a group of 1,000 people could be expected to be killed if infected and not treated for three full days?

 Option A: 16/81

 Option B: 8/27

 Option C: 2/3

 Option D: 19/27

 Option E: 61/125
Option E