In each question below are three statements followed by three conclusions numbered I, II and III. You have to take the three given statements to be true even if they seem to be at variance from commonly known facts and then decide which of the answers (a), (b), (c), (d) and (e) is the correct answer and indicate it on the answer sheet. Statements: All stones are rocks. Some rocks are bricks. Some bricks are cement. Conclusions: I. Some cements are rocks. II. Some bricks are stone III. Some stones are cement.