Regarding Control Charts, Changing from Two-Sigma Limits to Three-Sigma Limits

Multiple Choice

Regarding control charts, changing from two-sigma limits to three-sigma limits:

A) increases the probability of concluding nothing has changed, when in fact it has.
B) increases the probability of searching for a cause when none exists.
C) decreases the probability that the process average will change.
D) decreases the probability that defects will be generated by the process.