I need help answering the below:

Fill in the lettered blanks in the following table: a Investment Investment- Investment. Aa Ba Ca Amount of investment $40,000- (A)a $20,000- Economic life in years 100 50 Annual cash flowa $5,000 0 (B) $2,500-0 Payback period in years a (C)a 40 (D) Present value of cash flows (E) $33,000 0 (F)a Net present valued $5,500-0 $3,000- ($1,000)a