Karen Asked Her Dad for Two Dimes to Buy Gumballs

Karen asked her dad for two dimes to buy gumballs for herself and her brother. (The machine gives one gumball for a dime.) There were three red gumballs, two yellow gumballs, and one green gumball in the machine. Her favorite gumball is red. She hopes that she will get at least one red gumball.
A) List all the possible outcomes she can get for the two gumballs (think carefully) and the probabilities for each.
B) What is the probability that Karen will get at least one red gumball?
C) What does your answer in part B mean?