Answer:
Hence correct option is b i.e 7.2 yuan.
Explanation:
Given data;
candy bar cost is $1
Nominal exchange rate = 6 yuan equal to 1 dollar
Real exchange rate is = 1.2 dollar per 6 yuan
Therefore price for one candy at china will be 
The price of candy bar at china is = 7.2 yuan
Hence correct option is b i.e 7.2 yuan.
I can give you my take on it:
In command economies the quantity and more importantly the prize of the products is decided by the government and not by the people in production. As a result, people in the production can't have the motivation of producing more, as they won't benefit from it. So command economy encourages low motivation among the workers (i believe this was the case in the Eastern Block)
The speaker of the house is voted into the position by colleagues, while the voice President of the United States serves as President of the senate.
