Researchers want to investigate the effect of the environment on heart rate (HR). They found 50 adult twins who were separated when they were infants and measured their HR in the same environment and at the same time of the day to prevent the circadian effect. They analyzed the collected HR data and they found that the p value=0.048. 1) What was the alternative hypothesis, 2) which test did they use and 3) how do we interpret the p-value. A. 1) Ha: D 0, 2) Independent samples t-test, 3) we reject the null hypothesis. This suggests that there is a statistically significant difference in heart rates, likely due to environmental factors. B. 1) Ha: D 0, 2) paired t-test, 3) we reject the null hypothesis. This suggests that there is a statistically significant difference in heart rates, likely due to environmental factors. C. 1) Ha: D <0, 2) paired t-test, 3) we fail to reject the null hypothesis. This suggests that there is a statistically significant difference in heart rates, likely due to environmental factors. D. 1) Ha: D >0, 2) Independent samples t-test, 3) we fail to reject the null hypothesis. This suggests that there is a statistically significant