There are 3 possible outcomes of each game.
So, the tree will start with 3 leaves, and each leaf will further be divided into 3 leaves. Thus the total number of leaves in the tree diagram will be 3 x 3 = 9 leaves.
Option A correctly represent this situation.
The thousandth place is 4, which is less than 5 ⇒ Discard
339.4749 ≈ 339.47
Answer: 339.47