Three statements are given followed by three conclusions numbered I, II and…

Three statements are given followed by three conclusions numbered I, II and III. Assuming the statements to be true, even if they seem to be at variance with commonly known facts, decide which of the conclusions logically follow(s) from the statements. Statements: No cat is a dog. All dogs are rats. Some bears are cats. Conclusions: I. All rats can never be cats. II. No bear is a rat. III. All bears can never be dogs.