(a) whether the Union Government permits States to revise the estimated cost of projects under the Pradhan Mantri Gram Sadak Yojana (PMGSY) in order to accommodate the increasing prices of raw materials and if so, the details thereof;
(b) the details of States which have revised the estimated cost of various projects during the last three years and the current year, so far; and
(c) the details of the cost of such projects increased/decreased due to such revisions during the said period, State/UT-wise?