At 5, 10, and 15 Hours in the Graph Below

Multiple Choice

At 5, 10, and 15 hours in the graph below, which of the following statements should be true?

A) This fish is in the process of adding gas to its swim bladder.
B) This fish is in the process of removing gas from its swim bladder.
C) This fish has a swim bladder that is relatively full of gas.
D) This fish has a swim bladder that contains relatively little gas.