Consider a dataset on forestfires that includes a measure of the wind on each day. The following code was run:PROC TTEST DATA = ST307.forest ALPHA = 0.1 H0 = 5 PLOTS = all;VAR Wind;RUN;Relevant output is given here:What is the interpretation of the confidence interval for the mean in this output?Select one:a. We are 90% confident the sample mean wind speed is between 3.8878 and 4.1474.b. The mean is likely 4.0176.c. We are 90% confident the true mean wind speed is between 3.8878 and 4.1474.d. We are 90% confident the true mean wind speed is between 1.7047 and 1.8887.