How many generations can DuPont repitch their Saison yeast?

The correct answer, indicating that DuPont can repitch their Saison yeast for 150-200 generations, highlights the exceptional vitality and robustness of this particular yeast strain. Yeasts that can be repitched for such an extensive number of generations often exhibit enhanced performance characteristics, allowing brewers to maintain consistent fermentation quality over time.

In the case of DuPont's Saison yeast, it is known for its ability to produce complex flavors and aromas while retaining its health and viability through many repitches. This long lifespan is a testament to the strain’s genetic stability and adaptability, enabling brewers to produce high-quality Saison beers without the immediate need for sourcing new yeast frequently.

The other options suggest various counts that are either exceedingly low or high beyond practical feasibility for yeast management in brewing practice. Collectively, this context supports the validity of the 150-200 generation range as not only sustainable but also an industry benchmark for similar yeast strains in long-term brewing operations.