Invigilation is a technique that imposes significant controls to make fraud impossible to commit forever. Profiles and trends can be found by analyzing the only differences before and after invigilation periods. Companies normally implement controls at this level for normal business operations because they are cost effective.\ Question 4 options:\ \ A) \ \ True\ \ B) \ \ False: Invigilation is a technique that imposes significant controls to make fraud impossible to commit for a period of time.\ \ C) \ \ False: Profiles and trends can be found by analyzing the differences in the before, during, and after invigilation periods.\ \ D) \ \ False: Companies normally do not implement controls at this level for normal business operations because they are cost prohibitive.\ \ E) \ \ B, C, and D\