已知各期环比增长速度为7.1%、3.4%、3.6%、5.3%,则定基增长速度是____。
·107.1%*103.4%*103.6%*105.3%
·7.1%*3.4%*3.6%*5.3%
·(107.1%*103.4%*103.6%*105.3%)-1;
·(7.1%*3.4%*3.6%*5.3%)-1