Which of the following are modern techniques of control?

PERT Return on Investment Ratio Analysis All of the above

All of the above

Modern techniques of controlling are those which are of recent origin and are comparatively new in management literature. These techniques provide a refreshingly new thinking on the ways in which various aspects of an organisation can be controlled. These include: (a) Return on investment (b) Ratio analysis (c) Responsibility accounting (d) Management audit (e) PERT and CPM (f) Management information system