Whether it is the Boeing V-22 Osprey or a simple storm door installation for a do-it-yourselfer,nothing is ever completed as quickly or as cheaply as initial estimates due to:
A)Lack of definition.
B)Low initial estimates.
C)Specification changes.
D)Unexpected technical difficulties.

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The Answer of Whether it is the Boeing V-22 Osprey or a simple storm door installation for a do-it-yourselfer,nothing is ever completed as quickly or as cheaply as initial estimates due to:
A)Lack of definition.
B)Low initial estimates.
C)Specification changes.
D)Unexpected technical difficulties.

Whether It Is the Boeing V-22 Osprey or a Simple