Which number line can be used to find the distance between (4, -1) and (8, -1)?
O
A+
++
-2 -1 0 1 2 3 4 5 6 7 8
+
-2 -1 0 1 2 3 4 5 6 7 8
++
-2 -1 0 1 2 3 4 5 6 7 8
-8 -7 -6 -5 4 -3 -2 -1 0 1 2
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