Assume that we want to construct a confidence interval. Do one of the following, as appropriate: (a) find the critical value to/2, (b) find the 40- critical value za/2, or (c) state that neither the normal distribution nor 30- the t distribution applies. Frequency 20- The confidence level is 90%, o = 3459 thousand dollars, and the 10- histogram of 53 player salaries (in thousands of dollars) of football players on a team is as shown. 0 4000 8000 12000 16000 20000 Salary (thousands of dollars) . . . Select the correct choice below and, if necessary, fill in the answer box to complete your choice. O A. ta/2= (Round to two decimal places as needed.) O B. Za/2 = (Round to two decimal places as needed.) O C. Neither the normal distribution nor the t distribution applies