Question

FAN AND MEDAL
which is a correct interpretation of the slope of the line in this graph?

http://static.k12.com/calms_media/media/1349000_1349500/1349447/1/c6dfb295c107725e5c7c55546e6862c6257d407c/150516.jpg

A.
The volume of water in the tank is decreasing by 2.5 L per hour. *MY CHOICE*

B.
The volume of water in the tank is decreasing by 0.2 L per hour.

C.
The volume of water in the tank is decreasing by 0.4 L per hour.

D.
The volume of water in the tank is decreasing by 2 L per hour.