The productivity of labour does not depend only o its own effort and efficiency, but also on I the level of technical knowledge II. the quality of other factors III. racial qualities which allow persons from certain races to have good physique and be very active . Which of the above statements is /are correct?
A.
I only
B.
I and II only
C.
I and III only
D.
II and III only
E.
III only
Correct Answer: Option B
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