Study 1:A researcher randomly assigned 160 subjects into one of two groups:Atkins diet or Weight Watchers.The response variable was weight change in pounds after 6 weeks.The t-test results showed a p-value=.049.

Study 2:The researcher conducts the same study again using 300 subjects and obtains a p-value=.89.

Choose the best answer to describe possible errors in the statistical conclusions.

A.A type I error may have occurred in both study 1 and 2.

B.A type II error may have occurred in both study 1and 2.

C.A type I error may have occurred in Study 1 given that Study 2 did not reject the null hypothesis and used a larger sample size.

D.A type II error may have occurred in study 1and a type I error may have occurred in study 2.