Four friends, John, Mike, Sarah, and Emma, are ranked based on their scores in a quiz. John scored higher than Mike but lower than Sarah. Emma scored the lowest. What is the correct order of their scores from highest to lowest?
Four friends, A, B, C, and D, have different pets: a dog, a cat, a bird, and a fish. A does not have the dog or the bird. B has a cat. C does not have a fish. Which pet does D have?