According to the text regarding transcription in bacteria:

1. Statement A is incorrect: The strand with polarity 3'->5' acts as a template, while the other strand (5'->3') is called the coding strand. The coding strand is displaced, not copied; the RNA sequence is the same as the coding strand (except Uracil replaces Thymine), but it is copied from the template strand.
2. Statement B is incorrect: The split-gene arrangement (presence of introns and exons) is characteristic of eukaryotes, not prokaryotes.
3. Statement C is incorrect: In capping, methylguanosine triphosphate is added to the 5' end of hnRNA, not the 3' end (where tailing occurs).
4. Statement D is correct: The RNA polymerase is only capable of catalysing elongation. It associates transiently with the termination-factor (Rho factor) to terminate the transcription.