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To make bread successfully, bakers need fresh yeast and a warm kitchen for the bread dough to rise.

Yana: “The yeast he is using is out of date, and his new kitchen is warm, so Dan’s bread will not turn out well.”

Cohen: “I have fresh yeast, my kitchen is warm, but my hands are cold. My bread dough won’t rise.”

If the information in the box is true, whose reasoning is correct?