Kay Corporation has a marginal cost of capital schedule as follows:

Weighted average Cost

First $1 million pool of money 12%

Second $2 million pool of money 13%

Amounts above $3 million 15%

The company is considering the following assets:

Net Present Value at WACC of

Asset Cost IRR 12% 13% 15%

A $1,000,000 17% $400,000 $350,000 $250,000

B 900,000 16 200,000 190,000 150,000

C 600,000 15 200,000 180,000 0

D 500,000 14 100,000 40,000 -50,000

E 500,000 13.8 150,000 60,000 -170,000

F 500,000 13.5 80,000 70,000 -160,000

In which assets should the company invest( in which order)?