DNA dependent RNA polymerase can catalyse the polymerization in:

• A

  Only one direction, that is, from 5’→3’ direction

• B

  Only one direction, that is, from 3’→5’ direction

• C

  Both 5’→3’ direction and 3’→5’ direction simultaneously

• D

  5’→3’ direction initially and later from 3’→5’ direction