Consider the Following to Answer the Question(s) Below

Multiple Choice

Consider the following to answer the question(s) below:
A company that fills 12 ounce soft drink bottles wishes to monitor the quality of their process. To do this, the company has taken a series of samples of 4 bottles. The overall average fill is 12.03 ounces. The average range for the samples has been 0.06 ounces.
-What is the correct estimate of σ?

A) 0.029
B) 0.01
C) 0.02
D) 2.059
E) 3.99