Regarding Pasteur's experiments with the S- neck flask, which of the following statements is true?

Question

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Pasteur's experiments with the S-neck flask involved boiling the broth to kill all microorganisms initially (A), designing the flask in such a way that air could enter but microorganisms from the air were trapped in the neck, preventing contamination (B), including a nutrient broth as a food source for potential microorganisms to grow if they were able to enter (C), and allowing air to enter the flask to disprove the theory of spontaneous generation by showing that without microorganisms entering from the air, no life would spontaneously arise in the broth (D). Thus, all of the statements are true.

Regarding Pasteur's Experiments with the S- Neck Flask, Which of the Following