Pick up the correct statement from the following?
ADetailed specifications specify qualities, quantities and the proportions of materials to be used for a particular item
BThe incidental expenses of a miscellaneous character which could not be predicted during preparation of the estimate, is called contingencies
CAdditional supervising staff engaged at work site, is called work charged establishment
DAll the above
Correct answer
D. All the above
Explanation
The correct answer is All the above.