In an experiment, four sealed Erlenmeyer flasks are linked. A tube open to air is inserted into the water in flask D. Another tube connects the air in flask D to the air in flask C. A mouse is placed in flask C. A tube connects the air in flask C to the water in flask B. Another tube connects the air in flask B to the water in flask A. Another tube in flask A connects the air in flask A to an air pump. The water in flasks A, B, and D contain an indicator that will turn pink in the presence of carbon dioxide. If the mouse is carrying out cellular respiration, which of the following events will occur?
A) Flasks B and D will turn pink.
B) Only flasks A and B will turn pink.
C) Only flask D will turn pink.
D) None of the flasks will turn pink.
Answer: B) Only flasks A and B will turn pink.