12) How long does it take for an investment of $12,000 to grow to $20,000 if the money is invested in a rate of ( 5 points each part) 6% per year, compounded: (write the time up to one decimal place, if necessary) 12 A) quarterly A) 8.6 years B) 7.2 years C) 9.5 years D) None of the above 12 B) continuously A) 6.9 years B) 9.2 years C) 8.5 years D) None of the above