The graph shows how the depth of a submarine increased as it dove beneath the ocean surface

Submarine Depth
20
18
16
Depth (meters)
14
이다
8
(1,3).
3
4
5
Time (seconds)
What can be concluded from the information on the graph?
• A. The submarine's depth increased at a rate of = meter per second.
• B. The submarine's depth increased from 1 meter to 3 meters in 1 second
• C. The submarine's depth increased at a rate of 3 meters per second
• D. The submarine's depth increased from 1 meter to 3 meters in 3 seconds.

D. The submarine's depth increased from 1 meter to 3 meters in 3 seconds.