Your neighborhood bank is offering investors a money market account that pays $3\mathrm{.}5\%$ interest on deposits. If the current annual rate of inflation is $1\mathrm{.}2\%,$ how much is the exact real rate for this account?

Multiple choice question.

$2\mathrm{.}27\%$

$3\mathrm{.}05\%$

$2\mathrm{.}80\%$

$2\mathrm{.}30\%$