12. A: The estimated number of poisonous mushrooms among 50 red mushrooms and 24 green mushrooms B: The estimated number of poisonous mushrooms among 30 green mushrooms and 32 blue mushrooms. Note: 22% of red mushrooms are poisonous. A third of green mushrooms are poisonous. Seven out of 20 blue mushrooms are poisonous. Which value is greater: A or B?