Use reasoning to lead to the answer of the following question:
At what rate percent on simple interest will a sum of money double itself in 60 years?\nOptions:\n(A) 3 1/3%\n(B) 3 1/9%\n(C) 1 2/3%\n(D) 3 2/3%\n(E) 3 6/3%

(C)
P = (P*60*R)/100\nR = 1 2/3%.

Therefore, the answer is (C)