A recent advertisement in the financial section of a magazine carried the following claim: "Invest your money with us at $6$ percent, compounded monthly, and we guarantee to double your money sooner than you imagine." How long would it take to double your money at $6$ percent, monthly compounding?

$10\mathrm{.}24$ years.

$11\mathrm{.}58$ years.

$138\mathrm{.}98$ years

$11\mathrm{.}90$ years

Cannot be determined without more information.