Which sentence has an error in pronoun case? A) Both Billy and Ethan did well in college, but Billy was never successful as he was. B) Jake's communist principles led to an ideological conflict between him and Hailey. C) Given that Josh studied and Fred did not, it's no surprise that Josh did better than he did. D) After Bianca's party, Jessica claimed to have just as much right to a big birthday party as her did.