The precision and number of significant figures in 0.0045 mm is
A. precision = .0001 mm, significant figures = 4.
B. precision = .001 mm, significant figures = 4.
C. precision = .0001 mm, significant figures = 3.
D. precision = .001 mm, significant figures = 3.
E. precision = .0001 mm, significant figures = 2.
E. precision = .0001 mm, significant figures = 2.
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