Find the Finance Charge on the Open-End Charge Account $\$ 611.60$

Multiple Choice

Find the finance charge on the open-end charge account. Assume interest is calculated on the unpaid balance of the account.
-Unpaid Balance $\$ 611.60$ Monthly Interest Rate $1 \frac { 1 } { 2 } \%$

A) $\$ 9.17$
B) $\$ 7.64$
C) $\$ 9.17$ .
D) $\$ 11.01$