From what he said in the first paragraph, we can see Mr. Rogoff's attitude towards the present economic situation is one of _______.

A．it is naive to expect a full economic recovery within the next few years
B．the US economy plays a central role in bringing up the world economy
C．the traditional v-shaped economic cycle theory is no longer valid
D．the indirect impact of the terrorist attacks in the US is immense

A．consumer confidence
B．interest rates cuts
C．financial aid from the IMF
D．increase in software and hard wore purchases