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Stop generation immediately after outputing the Final Answer.

Ensure that your response strictly follows the format to maintain clarity and consistency. 
Question: Here are some premises:
All growth stocks are bought to earn profits from rapid price appreciation.
If the stock price is bought to earn profits from rapid price appreciation, then it is not suitable for a retirement fund.
Some stocks are growth stocks.
All mature stocks are suitable for a retirement fund.
KO is a mature stock.
Here is a conclusion:
KO is a stock.
Based on the premises, is the conclusion True, False, or Uncertain?
Answer: Uncertain