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The graph below represents the number of calories burned for every hour of walking.
The graph titled 'Calories burned walking' has 'number of hours spent walking' from 0 to 8 in increments of 1 on the horizontal axis and 'Number of calories burned' from 0 to 1080 in increments of 120 on the vertical axis has a slanting line facing upward starting from (0, 0) and passing through (1, 120), (2, 240), (3, 360), (4, 480), (5, 600), (6, 720), (7, 840) and (8, 960).
Which of the following statements describes the graph shown above?
A.
At 0 hours 120 calories are burned.
B.
To burn 480 calories, an individual must walk for 4 hours.
C.
To burn 120 calories, an individual must walk for 2 hours.
D.
An individual that walks for 5 hours burns less than 500 calories.