GA Q9

Most experts feel that in spite of possessing all the technical skills required to be a batsman of the highest order, he is unlikely to be so due to lack of requisite temperament. He was guilty of throwing away his wicket several time after working hard to lay a strong foundation. His critics pointed out that until he addressed his problem, success at the highest level will continue to elude him. Which of the statement(s) below is/are logically valid and can be inferred from the above passage? iii and iv ii and iii i, ii and iii ii only