Light can travel ______ km in a year.A. 5 billionB. 10 billionC. 5 tri – McqOptions

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1.	Light can travel ______ km in a year.A. 5 billionB. 10 billionC. 5 trillionD. 10 trillion
A.	B
B.	C
C.	D
D.	A
Answer» D. A

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