Consider the Solow-Swan model, the steady state equation implies that the level of savings in per worker terms is equal to

Group of answer choices

a. changes in the capital per worker (net investment).

b. changes in the capital per worker (net investment) plus the amount of investment (in per worker terms) required to keep the level of capital per worker constant (replacement investment).

c. changes in the amount of investment (in per worker terms) required to keep the level of capital per worker constant (replacement investment).

d. changes in the level of incomeplus the amount of investment required to keep the level of capital constant .