Use the following information to calculate the profitability index for A,B,C and D projects. Project A Net present value (Em)=6.43 Gross present value (Em)=8.43 Initial cost of investment (Em)=2 Project B Net present value (Em)=4.776 Gross present value (Em)=6.776 Initial cost of investment (Em)=2 Project C Net present value (Am)=28.71 Gross present value (m)=34.71 Initial cost of investment (Em)=6 Project D Net present value (Am)=8.562 Gross present value (Em)=12.562 Initial cost of investment (Em)=4 1.467;1.311;1.419;1.209 (B) 8.43;6.776;11.57;6.281 2.14;3.215;2.388;4.785