"Embodied Technical Change" Is Said to Occur When

"Embodied technical change" is said to occur when

A) innovations in the organization of production take place which do not involve changes in the form of capital used.
B) older capital equipment is replaced with different, more productive, capital.
C) techniques of managerial control are improved.
D) the capital- labour ratio is increasing.
E) the labour force acquires new skills that can be used across a wide range of industries.