Correct Option: B

Despite big investments during the first three Plans, the Living standars of the poor could not be raised and poverty and inequity in distribution of state resources remained stark. Consequently, the period between 1966 and 1969 marked the shift from a 'growth approach' to a 'distribution from growth approach'. Looking at the failures and pitfalls the planners suspended the impending Fourth Plan, which was due in 1966, until 1969 for a revision of objectives and targets. This came to be called as the 'Plan Holiday' extending from 1 April 1966 to 31 March 1969.