<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 4th grade class in Salem, Massachusetts has 20 students. Due to recent media coverage of the fallacious association between vaccines and autism, none of the students have been immunized against influenza this year. Fortunately, up to this point none of the students has come down with the flu. During the first week of flu season, however, 2 students contract influenza. In the second week, 3 more students contract influenza. And in the third week, 5 more students contract influenza. The other students remained healthy throughout the rest of the flu season. In this class, what was the risk of contracting influenza during the second week of the flu season?? A: 0.1, B: 0.15, C: 0.17, D: 0.25, E: 0.5,  <response>: This is a probability question about the risk of contracting influenza during the second week of flu season in a class of 20 unvaccinated students. In the first week, 2 students got the flu. In the second week, 3 more students got the flu. So by the end of the second week, 2 3 5 students had gotten the flu. Since there were 20 students total, the risk of getting the flu in the second week was the number who got it that week 3 divided by the total number of students 20. C: 0.17 