Which of the following statement represents an argument put forward by Johnson and Kaplan supporting a more flexible approach to reporting periods? Select one: O a. Standardisation of reporting periods puts pressure on managers to produce profits over short-term periods. O b. Standardisation of reporting periods puts pressure on managers to produce profits over long-term periods. O c. Annual reports are only tentative and conjectural and the truth about the reporting entity cannot be verified until the entity has run its entire course. O d. The appropriate accounting period can only be determined by the nature of the reporting entity