In the Px = export price index, Pm = import price index, Qx = export quantity index,and Qm = import quantity index. Developing countries tend to maintain that their commodity term of trade have declined over the long run suggesting that _________ has declined?

– by
In the Px = export price index, Pm = import price index, Qx = export quantity index,and Qm = import quantity index. Develog countries tend to maintain that their commodity term of trade have declined over the long run suggesting that _________ has declined?

A. Px/Pm
B. Pm/Px
C. (Pm/Px)Qm
D. (Px/Pm)Qx