For each of these arguments determine whether the argument is correct or incorrect and explain why.
a) All students in this class understand logic. Xavier is a student in this class. Therefore, Xavier understands logic.
b) Every computer science major takes discrete mathematics. Natasha is taking discrete mathematics. Therefore, Natasha is a computer science major.
c) All parrots like fruit. My pet bird is not a parrot. Therefore, my pet bird does not like fruit.
d) Everyone who eats granola every day is healthy. Linda is not healthy. Therefore, Linda does not eat granola every day.