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

• A
  Kingdom $\rightarrow$ Phylum $\rightarrow$ Class $\rightarrow$ Order $\rightarrow$ Family $\rightarrow$ Genus $\rightarrow$ Species
• B
  Order $\rightarrow$ Class $\rightarrow$ Family $\rightarrow$ Phylum $\rightarrow$ Kingdom
• C
  Family $\rightarrow$ Order $\rightarrow$ Class $\rightarrow$ Phylum $\rightarrow$ Kingdom
• D
  Kingdom $\rightarrow$ Phylum $\rightarrow$ Class $\rightarrow$ Order $\rightarrow$ Family