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A) \[n=2\,\,\,to\,\,\,n=1\]
B) \[n=3\,\,\,to\,\,n=2\]
C) \[n=3\,\,\,to\,\,n=1\]
D) \[n=4\,\,\,to\,\,n=1\]
Correct Answer: D
Solution :
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