In this task, you're given four sentences of a story written in natural language. The given story is not complete and your job is to complete the story by selecting one of the sentence choices from (A) and (B), such that the story sounds fully coherent.

Sentence1: Ivan got bitten by a mosquito on a forest hike. Sentence2: The bite was red and itchy, but it didn't bother him at first. Sentence3: Then it swelled up terribly and became sore. Sentence4: A doctor looked at it and told Ivan the bite was infected!
(A) Ivan was happy the hike ended so well. (B) Ivan bought mosquito repellent for his next hike.
B