Which of the following statements regarding solid lumber is MOST accurate?

A) Dimension lumber is available in lengths from 6 to 16 feet (1.8 m to 4.9 m).
B) Differences between the actual and nominal dimensions are the result of variations in machinery used to cut a log into rough lumber.
C) The actual dimension of a finished piece of wood will be larger than the nominal dimension.
D) Dimension lumber used as rafters can be supplied in lengths up to 20 feet (6 m).


B

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