Read the sentence below.
'The archeologist had to be meticulous, carefully brushing away centuries of dust from the fragile artifact without causing any damage.'
Based on the context, what is the meaning of the word 'meticulous'?
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A
Showing great attention to detail; very careful and precise.
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B
Acting with great speed and urgency.
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C
Having extensive knowledge of a subject.
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D
Lacking interest or concern.