During the construction period, price variation clause in contracts caters to
(A) Increase in rates of only important materials
(B) Variation in cost in materials element, labour element and petrol-oil-lubricant element
(C) Variation in total cost of the project on an ad hoc basis
(D) Rate of inflation
(A) Increase in rates of only important materials
(B) Variation in cost in materials element, labour element and petrol-oil-lubricant element
(C) Variation in total cost of the project on an ad hoc basis
(D) Rate of inflation