According to the Solow model, how would each of the following affect consumption per worker in the long run (that is, in the steady state)? Explain.

a. The destruction of a portion of the nation's capital stock in a war.

b. A permanent increase in the rate of immigration (which raises the overall population growth rate).

c. A permanent increase in energy prices.

d. A temporary rise in the saving rate.

e. A permanent increase in the fraction of the population in the labor force (the population growth rate is unchanged).