You Have Determined the Base Sequence for a Gene from Felis

You have determined the base sequence for a gene from Felis catus (domestic cat) that you believe may be involved in feline leukemia.A blastn search returns nucleotide sequences from viruses,not mammals,although the similarity is very low.What other techniques or bioinformatic tools could you use to investigate the function of this gene?

A) RNAseq
B) tblastx search
C) Northern blot analysis
D) protein blast
E) RNAseq and Northern blot analysis