Which revision corrects the pronoun error in the sentence? rahul and siri sorted

it should be "rahul and siri sorted through all the video games that were theirs. after counting them, ori realized that between them, they had all the games in the series."

  plan: i will begin with a quotation about the importance of unity in a community. then, i will state my claim that an activity will unite our school by creating a shared vision, purpose, and direction. in the body, i will use three main points that describe the different avenues the students can take: through a variety of clubs, through a special event, or through an awareness week. i will provide evidence about other towns that have unity activities and the kinds of events that they include. pictures will illustrate my three main points in action. for the ending, i will restate the main idea in a new way and pose a question to keep the audience thinking. 

i'm pretty sure i had this question the other day and b was the right answer.