Which combination of TWO exit criteria from the list would be best to use?

Considerable attention will be given in this project to defining exit criteria and on reporting back on their status .

Which combination of TWO exit criteria from the list would be best to use? 1 credit

I. Total number of defects found

II. Percentage of test cases executed

III. Total test effort planned versus total actual test effort spent

IV. Defect trend (number of defects found per test run over time
A . (i) and (ii)
B . (i) and (iv)
C . (ii) and (iii)
D . (ii) and (iv)