Wrong move
Direct answer
The risky shortcut is assuming every quantity change gets paid extra. Unit pricing matters when payment adjusts by measured quantities; lump sum usually pays the agreed price for defined scope unless the contract changes.
How to use this answer
Read the answer once, then prove it by choosing an answer in a practice question before looking at the explanation. If the miss repeats, tag the domain as Cost control and drill a smaller set before returning to mixed practice.
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Guide
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