【名词&注释】
中国农业银行(the agricultural bank of china)、银行业务(banking)、实际年利率(effective annual interest rate)、贷记卡(credit card)
[单选题]已知某笔贷款的年利率为12%,按月计算,则该笔贷款的实际年利率为()。
A. 12.68% B. 12.55% C. 12.36% D. 12.21%