According to the author, people in which country are expected to live longer

A．Smell is the most emotional of the senses.
B．Smell stimulates our memory more than the other senses.
C．Smell is considered to be mysterious, as it is untouchable.
D．Smell is the sense most difficult to identify.

A．the fight smell made people think a product was better
B．people preferred the smell of lemon to coconut
C．certain smells could make people dislike a shop
D．customers rated the goods on sale as more inviting