The results of a trial involving an experimental vaccine for children are shown below. Developed flu Did not develop flu Vaccine treatment 12 1039 Placebo 111 263 a. State the relevant null and alternative hypotheses. b. Conduct the appropriate test and state a conclusion. Use a significance level of 0.01. a. Determine the null and alternative hypotheses. Choose the correct answer below. O A. Ho: Treatment method and flu development have equal proportions. HA: Treatment method and flu development have non-equal proportions. O B. Ho: There is a relationship between treatment method and development of flu. HA: Treatment method is independent of flu development. O C. Ho: Treatment method is independent of flu development. HA: There is a relationship between treatment method and development of flu. O D. Ho: Treatment method and flu development have non-equal proportions. HA: Treatment method and flu development have equal proportions. b. Calculate the test statistic. 2=(Round to three decimal places as needed.) Calculate the p-value. p-value = (Round to four decimal places as needed.) Determine a conclusion. Choose the correct answer below. A. Reject the null hypothesis. There is insufficient evidence to conclude treatment method and flu development are not independent. O B. Do not reject the null hypothesis. There is sufficient evidence to conclude that treatment method and flu development are not independent. O C. Do not reject the null hypothesis. There is insufficient evidence to conclude treatment method and flu development are not independent. O D. Reject the null hypothesis. There is sufficient evidence to conclude that treatment method and flu development are not independent