A bowl contains candies of the same size in three flavors: orange, strawberry, and pineapple. If the probability of randomly pulling out an orange candy is 1/9, and the probability of randomly pulling out a strawberry candy is 3/9, what is the probability of randomly pulling out a pineapple candy?
A: 2/9
B: 3/9
C: 4/9
D: 5/9