With no explanation, label text_A→text_B with either "no" or "yes".
text_A: For those who choose to take the stairs and penguins who are sad, the probability of penguin death is 77%. For those who choose to take the stairs and penguins who are happy, the probability of penguin death is 57%. For those who choose to take the elevator and penguins who are sad, the probability of penguin death is 39%. For those who choose to take the elevator and penguins who are happy, the probability of penguin death is 19%. For those who choose to take the stairs, the probability of penguin happiness is 44%. For those who choose to take the elevator, the probability of penguin happiness is 87%.
text_B: Does my decision positively affect penguin survival through penguin mood?
no.