Please help me with this

A quality analyst wants to construct a sample mean chart for controlling a packaging process. He knows from past experience that when the process is operating as intended. packaging weight is normally distributed with a mean of twenty ounces. and a process standard demation of two ounces. Each day last week. he randomly selected four packages and weighed each. The data from that activity appears below. If he sets an upper control limit of21 and a lower control limit of 19 around the target value of twenty ounces. what is the probability of concluding that this process is out of control when it is actually in control? There is approximately 9% chance that, when the process is operating in control. a sample will indicate otherwise. 0 A. B There is approximately 61 Du chance that. when the process is operating in control. a sample will indicate otherwise. 0 . C) C There is approximately 99% chance that. when the process is operating in control. a sample will indicate otherwise. There is approximately 31 Du chance that. when the process is operating in control. a sample will indicate otherwise