Whic h o f th e followin g i s a n exampl e o f physica l capital?
A.
th e availabl e knowledg e o n ho w t o mak e semiconductors
B.
a taxica b driver’ s knowledg e o f th e fastes t route s t o take
C.
bulldozers , backhoe s an d othe r constructio n equipment
D.
Al l o f th e abov e ar e correct.