8) Which of the following statements about internal controls is correct? n Select one: O a. a. Segregation of duties involves physically segregating employees so that they are better able to focus on their accounting functions. O b. Control is most effective when only one person is responsible for a given task. Oc. The custodian of an asset is the best person to accurately keep and maintain the record of that asset. O d. Independent checks of performance can only be performed by the external auditors of a company