Human responses to chemosignals

Which of the following is a scientifically accurate statement about human responses to chemosignals? Human responses to chemosignals are very similar to other animals with regard to pheromones and sexual behavior. () Chemosignals may have some influence on sexual arousal and mood, but humans are a far more complex specie than other animals, though any response due to chemosignals is related to sexual arousal Chemosignals may have some influence on sexual arousal and mood, but humans are a far more complex specie than other animals. Some data suggests they do have a distinct effect on arousal, though they also may serve to decrease sexual arousal O Chemosignals always tend to increase sexual arousal in humans