Cory is hiking up a hill with a constant slope. The double number line shows that after Cory hikes 3 \text{ km}3 km3, start text, space, k, m, end text, his elevation is 120 \text{ m}120 m120, start text, space, m, end text. Select the double number line that correctly labels Cory's elevation after he hikes 1, 2,1,2,1, comma, 2, comma and 4 \text{ km}4 km4, start text, space, k, m, end text. Choose 1 Choose 1 (Choice A) A (Choice B, Checked) B