Which sequence is in the correct order from the least specific to the most specific?

a
Domain→Kingdom → Phylum → Class → Order → Family → Genus → Species
b
Kingdom → Family → Genus → Phylum → Domain→ Order → Species → Class
c
Domain→Kingdom → Genus → Family → Phylum → Class → Order → Species
d
Species→Kingdom → Phylum → Class → Family → Order → Genus → Domain

a) Domain→Kingdom → Phylum → Class → Order → Family → Genus → Species