Use the sample data and confidence level given below to complete parts (a) through (d).A research institute poll asked respondents if they felt vulnerable to identity theft. In the poll, n=1015 and x=580 who said "yes." Use a 90 % confidence level. a) Find the best point estimate of the population proportion p. (Round to three decimal places as needed.)b) Identify the value of the margin of error E. E = . (Round to four decimal places as needed.) c) Construct the confidence interval.___ < p < ___d) Write a statement that correctly interprets the confidence interval. A. One has 90% confidence that the sample proportion is equal to the population proportion. B. One has 90% confidence that the interval from the lower bound to the upper bound actually does contain the true value of the population proportion. C. There is a 90% chance that the true value of the population proportion will fall between the lower bound and the upper bound. D. 90% of sample proportions will fall between the lower bound and the upper bound.