The diagram illustrates an experiment that examines how light intensity affects an aquatic plant. Photosynthesis took place in both test-tube P and test-tube Q. The two test-tubes were maintained at the same temperature. Test-tube P produced 12 bubbles per minute. What is the most likely number of bubbles produced in one minute by test-tube Q? (The distance from the light source to P is $20\,\text{cm}$ and to Q is $10\,\text{cm}$.)
- A0
- B3
- C12
- D48