If Sam can purchase up to 3 ice cream cones and the probabilities that he/she purchases 0, 1, 2, or 3, are 0.20, 0.45, 0.35, and 0.05 respectively, is this a valid probability distribution? Group of answer choices Yes, as all are between 0 and 1 No, as they do not add to 1 No, as no probability is between 0 and 1 Yes, as they are all positive