A Drive-In Restaurant Is Running a New Promotion, the "Route

A drive-in restaurant is running a new promotion, the "Route 44,"
named after an interstate that runs through their primary market area. The drink is promoted as 44 ounces of pure carbonated pleasure but the regional manager, being somewhat of a quality expert, wants to make sure that the company's drink process can deliver 44 ounces. She decides statistical quality control is the best way to monitor their process. For ten consecutive days she purchases five Route 44 drinks from franchise locations on her way to headquarters and turns them over to the testing lab for volume analysis. The data appear in the table, all amounts are in fluid ounces as measured by the testing lab. Since the regional manager is somewhat of a quality expert, she needs your help in formulating a control chart that will monitor the process performance to target.

-The LCL for the three sigma X bar chart for the process is approximately:

A) 45.03
B) 47.56
C) 49.77
D) 42.50
E) 40.77