How Long Does It Take for $6,000 Invested at 9

Multiple Choice

How long does it take for $6,000 invested at 9% annual simple interest to be worth $10,500? Round your answer to two decimal places. ​

A) 30.56 years
B) 83.33 years
C) 8.33 years
D) 4.76 years
E) 0.83 years