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How long would it take your money to double itself if it is invested at 6% simple interest, compounded semi-quarterly, and compounded continuously? . A. 12.67 yrs ; 11.2 yrs ; 15.05 yrs B. 18.67 yrs ; 11.6 yrs ; 11.24 yrs C. 16.67 yrs ; 11.6 yrs ; 11.55 yrs D. 17.67 yrs ; 10.2 yrs ; 11.45 yrs