Engineering Economy - Engineering

Q1:

Which one of the following questions is relevant to the construction estimates :

A Did the estimators precisely evaluate site conditions ?

B Did the estimators use short cut methods which may be un realistic in their situation ?

C How much money will the contractor's risk, loosing if he Were to submit bid on the raw estimate of cost.

D All of these

ANS:D - All of these

How to be a contractor's risk? Explain.