Who among the following introduced the concept of ‘rolling plan’?

The concept of 'rolling plan' was introduced by Gunnar Myrdal, the Swedish economist and Nobel laureate. Myrdal's approach emphasized continuous planning with annual reviews and adjustments, rather than rigid five-year cycles. This approach allows for greater flexibility and responsiveness to changing economic conditions. India adopted this concept in 1978 during the Janata Party government's tenure.