Which of the following represents the correct sequence of taxonomic categories in descending order of variation?

• A
  Kingdom $\rightarrow$ Subkingdom $\rightarrow$ Phylum $\rightarrow$ Class $\rightarrow$ Subclass $\rightarrow$ Order $\rightarrow$ Family
• B
  Order $\rightarrow$ Subclass $\rightarrow$ Family $\rightarrow$ Phylum $\rightarrow$ Kingdom $\rightarrow$ Subkingdom
• C
  Kingdom $\rightarrow$ Phylum $\rightarrow$ Family $\rightarrow$ Subclass $\rightarrow$ Order
• D
  Family $\rightarrow$ Order $\rightarrow$ Subclass $\rightarrow$ Class $\rightarrow$ Phylum $\rightarrow$ Subkingdom $\rightarrow$ Kingdom