Which of the Following Is (Are)characteristic Of $\rho$ -Independent Termination of RNA Transcription in E

Which of the following is (are) characteristic of $\rho$ -independent termination of RNA transcription in E.coli?

A) The RNA transcript contains self-complementary sequences.
B) Three conserved A's in the template strand near the end of the transcript.
C) A CA-rich sequence near the end of the transcript.
D) Both A and B
E) Both A and C