$2500 Is Invested in an Account at Interest Rate R,compounded $r = 0.06$

Multiple Choice

$2500 is invested in an account at interest rate r,compounded continuously.Find the time required for the amount to double.(Approximate the result to two decimal places. ) ​ $r = 0.06$ ​

A) 13.55 yr
B) 10.55 yr
C) 12.55 yr
D) 9.55 yr
E) 11.55 yr