HnRNA, precursor of mRNA is coded by RNA polymerase ll. So, option d is correct.

RNA Polymerase III and its Products:
RNA polymerase III is responsible for transcribing genes that code for small functional RNAs. These RNAs play essential roles in various cellular processes. Here are the products of RNA polymerase III:

snRNA (small nuclear RNA):
- Small nuclear RNAs are involved in splicing pre-mRNA molecules.
- They form complexes with proteins to create small nuclear ribonucleoproteins (snRNPs).
- These snRNPs are essential for the splicing of pre-mRNA to produce mature mRNA.

5sRNA:
- 5sRNA is a component of the large ribosomal subunit in the cytoplasm.
- It plays a crucial role in protein synthesis by aiding in the assembly of ribosomes.

tRNA (transfer RNA):
- tRNAs are responsible for carrying specific amino acids to the ribosome during protein synthesis.
- They have a unique structure that allows them to recognize the codons on the mRNA and deliver the corresponding amino acid.

hnRNA (heterogeneous nuclear RNA):
- hnRNA is transcribed by RNA polymerase II, not RNA polymerase III.
- It is the precursor molecule to mRNA and undergoes processing, including splicing and capping, to become mature mRNA.
Therefore, RNA polymerase III does not code for hnRNA, as this is the product of RNA polymerase II. RNA polymerase III is primarily involved in transcribing genes that produce small functional RNAs like snRNA, 5sRNA, and tRNA.