Proofread the sentences. Which is correct?
 A:To walk to the middle school, I must walk past Uncle Frank’s house. He lives on park street. 
 B:To walk to the middle school, I must walk past Uncle Frank’s house. He lives on Park Street. 
 C:To walk to the middle school, I must walk past uncle Frank’s house. He lives on Park Street. 
 D:To walk to the middle school, I must walk past Uncle Frank’s house. He lives on Park street.