Which of the following would not be considered a characteristic of a less developed nation?

If the options to (which of the following would not be considered a characteristic of a less developed nation?) are:

A. high literacy rates 
B. high unemployment 
C. generally healthy population 
D. few subsistence farmers

Then the answer would be B, because if a country is less developed, it will probably have more urgent things to do than reading (like working like heck to survive) and the medical is probably not really good either because the country is poor and little farmers means many workers are in factories etc which in return means that the country is developed.