kraken result kind of confusing

[chloelulu]

Hi,
I am using Kraken to assign taxonomy of my assembled contigs from shotgun metagenomic data.
I build the virus database, and use the code kraken --db viruses --threads 24 --fasta-input ../C.contigs.fa --output C_kraken_virus
Then I filter all the Classified part, it gives me the result in the attachment.
a.txt

As the result depicted, one contig can be assigned to different taxonomy based on the k-mer.
So may I know how to select the result for each contig? Kinds of confusing to me.
Thanks so much.