A. 4.3 Billion years
B. 4.4 Billion years
C. 4.5 Billion years
D. None of these
Submitted by: Saqlain hydar
A. 4.3 Billion years
B. 4.4 Billion years
C. 4.5 Billion years
D. None of these
Submitted by: Saqlain hydar
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