In the spreadsheet shown below, we computed profit earned by selling houses by entering the formula =F8-E8 in cell G8 and copying it down to G9:G11. We used the word open to denote a house that is not yet sold. Unfortunately, when a house has not yet been sold our spreadsheet shows the #VALUE error, because you cannot subtract the buy price from the word open. We would like to "error trap" Column G so that when a house has been sold the correct profit has been computed and if the house has not yet been sold a _ will be entered in Column G. How many of the following formulas could be entered in cell G8 and copied down to G9:G11 to achieve this goal?

I. IFERROR(F8-E8,"_ ")

II. ISERROR(F8-E8," _")

III. IF(COUNT(G8)>0,F8-E8,"_")

IV. IFERROR(F8-E8,_)

V. IFERROR(E8-F8,"_ ")

A. Just I

B. Just I and II

C. Just III

D. Just I and III

E. Just IV

F. Just I and IV

G. Just I and V

7 Buy Price Sell Price Profit 400 opern 500 600 700 opern #VALUE! 9 10 600 10 700 100 VALUE! 12