The p-value given by the log-rank test comparing the two survival curves is 0.002. Assuming a rejection level (alpha level) of 0.05, what conclusion is consistent with this result?

a. The observed differences in Kaplan-Meier curves between the two groups are relatively likely if there is no population-level difference in the time-to-event curves for rotavirus gastroenteritis diagnoses between the vaccine and control groups over the 60-week follow-up period.

b. The observed differences in Kaplan-Meier curves between the two groups are relatively unlikely if there is no population-level difference in the time-to-event curves for rotavirus gastroenteritis diagnoses between the vaccine and control groups over the 60-week follow-up period..

c. The observed differences in Kaplan-Meier curves between the two groups are relatively likely if there is a large population-level difference in the time-to-event curves for rotavirus gastroenteritis diagnoses between the vaccine and control groups over the 60-week follow-up period.

d. The observed differences in Kaplan-Meier curves between the two groups are relatively unlikely if there is a large population-level difference in the time-toevent curves for rotavirus gastroenteritis diagnoses between the vaccine and control groups over the 60-week follow-up period.