In terms of calculations of prejudgment interest and present values of lost profits, an ex post approach generally applies. I. All lost profits-discount to the date of injury II. Future lost profits-discount to the date of trial III. Prejudgment interest-calculated on the present value of all lost profits as of the date of injury to the date of trial IV. Prejudgment interest-calculated on past lost profits to the date of trial 

a. I and III.

b. I and IV.

c. II and III.

d. II and IV.