Given the calculation: (3.83 × 10 -3) × (7.777 × 10 7) = ?, what is the answer reported to the correct number of significant figures?

Given the calculation: (3.83 × 10 -3) × (7.777 × 10 7) = ?, what is the answer reported to the correct number of significant figures?
A) 2.98 × 105
B) 2.978 × 105
C) 0.298 × 106
D) 0.2978 × 106


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