The correct option is B RNA dependent DNA polymerase
Some viruses such as HIV have the ability to transcribe RNA into DNA. Such a process is known as reverse transcription.
As there is synthesis of the polynucleotide chain of DNA the enzyme should be DNA polymerase.
Synthesis of DNA is taking place from RNA template, therefore the enzyme is dependent on RNA.
Hence, the name of the enzyme is RNA dependent DNA polymerase (dependent on RNA to polymerise DNA).