According to Jan Tinbergen,the 1996 Nobel Prize Winner,a Nation Should

According to Jan Tinbergen,the 1996 Nobel Prize winner,a nation should have:

A) Half as many effective policy instruments for use,as the number of objectives it wants to achieve
B) Twice as many effective policy instruments for use than the number of objectives it wants to achieve
C) Just as many effective policy instruments for use as the number of independent objectives it wants to achieve
D) Just one policy instruments to use to achieve all the objectives it wants to pursue