Mr. Mole left his burrow that lies below the ground and started digging his way at a constant rate deeper into the ground. Let yyy represent Mr. Mole's altitude (in meters) relative to the ground after xxx minutes.
Which of the following could be the graph of the relationship?
Choose 1
Choose 1

(Choice A)
A
graph of an increasing linear function in quadrant 1 with a positive y-intercept

(Choice B)
B
graph of an increasing linear function in quadrants 1 and 4 with a positive x-intercept and negative y-intercept

(Choice C)
C
graph of a decreasing linear function in quadrants 1 and 4 with a positive x-intercept and positive y-intercept

(Choice D)
D
graph of a decreasing linear function in quadrant 4 with a negative y-intercept