Context: The passage below describes an experiment. Read the passage and then follow the instructions below.

Greg mixed bacteria into a nutrient-rich liquid where the bacteria could grow. He poured four ounces of the mixture into each of ten glass flasks. In five of the ten flasks, he also added one teaspoon of cinnamon. He allowed the bacteria in the flasks to grow overnight in a 37°C room. Then, Greg used a microscope to count the number of bacteria in a small sample from each flask. He compared the amount of bacteria in the liquid with cinnamon to the amount of bacteria in the liquid without cinnamon.
Figure: flasks of liquid for growing bacteria.
Identify the question that Greg's experiment can best answer.
A. Do more bacteria grow in liquid with cinnamon than in liquid without cinnamon?
B. Does temperature affect how much bacteria can grow in liquid?
Determine the correct option from the provided choices and reply with its corresponding letter.

A