There are four students running for president: Ann, Jessica, Linda, and Maria. There are three students running for vice president: John, Bob, and Jim. The tree diagram below shows the possible outcomes. Use the diagram to answer the questions. President Ann Vice President Outcome (Ann, John) Bob (Ann, Bob) John Jessica Linda Maria Jim (Ann, Jim) V V V V John (Jessica, John) Bob (Jessica, Bob) Jim (Jessica, Jim) John (Linda, John) Bob (Linda, Bob) Jim (Linda, Jim) John (Maria, John) Bob (Maria, Bob) Jim (Maria, Jim) (a) How many outcomes are there? outcome(s) (b) How many outcomes have both Maria and John being chosen? outcome(s) (c) How many outcomes have Jessica or Linda being chosen? outcome(s)