Trinity Hospital in the Philippines has been experiencing an increase in the errors related to the medication administered to patients. Over the course of 30 days, the hospital collected the number of medical errors per day and find out that there are 3.5 errors on an average per day. Establish a two sigma c-chart. What is the upper control limit for this C chart?

A)Less than 8

B)Between 9 & 10

C)11 or more