Hi, I need help please!

Jacob stood in line to pick up a souvenir postcard at the museum. All the postcards were either blue, white, or green, with a picture of a fish, insect, or bird. There was an equal number of each type of postcard. What is the probability that Jacob was randomly handed a green postcard with a fish on it?

A): 1/6

B): 1/9

C): 1/2

D): 1/3

Thanks so much, I would truly appreciate it! :)