Which of the following statement regarding internal control is correct ?select one !a . Internal controls provide a degree of assurance that the organisation and itssystems are running normally .b. Internal controls can prevent and detect anomalous and undesirable occurrences ,out they cannot reverse the effects caused by such occurrences .C . Internal controls do not concern about natural disasters and other catastrophicdisruptions .d . Internal controls are only implemented in the most important functions of anorganisation .