Economists Expect Some Unemployment to Exist Even at Times of "Full

Multiple Choice

Economists expect some unemployment to exist even at times of "full employment" for,among others,the following reasons:
1) actual GDP is rarely equal to potential GDP;
2) as the economy changes,the structure of the existing labour force is not the same as the structure of labour demand;
3) people entering the labour force typically take some time to find a job.

A) 1 only
B) 2 only
C) 3 only
D) 2 and 3
E) 1 and 2