假设银行利率为i,从现在开始每年年末存款为1元,n年后的本利后为,如果改为每年年初存款,存款期数不变,n年后的本利和应为:
A. img alt="" src="http://www.acc5.com/images/2015/tiku_img/20170321111604_75408.png" style="height:68px; width:150px" />
B. img alt="" src="http://www.acc5.com/images/2015/tiku_img/20170321111615_95734.png" style="height:74px; width:150px" />
C. img alt="" src="http://www.acc5.com/images/2015/tiku_img/20170321111630_51390.png" style="height:70px; width:150px" />
D. img alt="" src="http://www.acc5.com/images/2015/tiku_img/20170321111650_64227.png" style="height:70px; width:150px" />
【答案及解析】B
【解析】预付年金终值系数与普通年金终值系数的关系:期数加1,系数减1。