If the government builds new infrastructures, there will be an increase in
(1) employed population during the construction period.
(2) the price level during the construction period.
(3) potential output after the construction is completed.
(4) the price level after the construction is completed.
A. (1) and (2) only
B. (3) and (4) only
C. (1), (2) and (3) only
D. (1), (2), (3) and (4)