The red dot on the police map shows ()

A. the applicant’s professional qualification
B. the applicant’s personalities
C. the applicant’s education and family background
D. both A and B

A. he found it difficult being sincere to housewives after walking so far
B. he did not think he was selling enough
C. he found it difficult to say they were good brushes when he knew they were not
D. he was unable to sell any of the brushes because they were of such poor quality