A is correct. The effective annual rate (EAR) is calculated as follows:


Solving for N on a financial calculator results in (where FV is future value and PV is present value): Solving for N on a financial calculator results in (where FV is future value and PV is present value):

= 46.21 years,which multiplied by 12 to convert to months results in 554.5, or ≈ 555 months.先求出有效年利率,,i=3.0453,PV=250,000 ,FV=1,000,000 ,PMT=0 计算N,再转换成月份数。= 46.21 years,which multiplied by 12 to convert to months results in 554.5, or ≈ 555 months.
先求出有效年利率,i=3.0453,PV=250,000 ,FV=1,000,000 ,PMT=0 计算N,再转换成月份数。