20 22) Crystal Britt's credit card company charges an APR of 21 percent applied at a monthly periodic rate on the previous balance. Crystal's December statement showed: previous balance, $397.90, new purchases, $341.80; fees, $55, payments, $500; and purchase returns, $56.99. What is her finance charge for December? A) $83.52 B) $6.96 $49.92 D) $4.16 20 22) Crystal Britt's credit card company charges an APR of 21 percent applied at a monthly periodic rate on the previous balance. Crystal's December statement showed: previous balance, $397.90, new purchases, $341.80; fees, $55, payments, $500; and purchase returns, $56.99. What is her finance charge for December? A) $83.52 B) $6.96 $49.92 D) $4.16