Which of the following can best describe the author's tone

A．Because the farmers will need a lot of money.
B．Because it will need money to buy oil.
C．Because it will have too much food for its own use.
D．Because it wants to help other countries.

A．Energy will be more expensive and in short supply.
B．Most people will be on their legs.
C．The air will be cleaner in 1997.
D．There will be more cars than ever in.1997.