1.

Which of the following assumptions underlying input-output analysis raises about its validity ?_x005F_x000D_I- The technical coefficients are fixed which means so substitution between inputs occurs_x005F_x000D_II- There are no externalities so that the total effect of carrying out several activities is the sum of the separate effects_x005F_x000D_III- Each good is produced by only one industry and each industry produces only one commodity_x005F_x000D_IV- There is no technical change

A. I and II only
B. I, II, III only
C. I, II, IV only
D. I, II, III and IV
Answer» E.


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