Assertion (A) The hierarchy includes seven obligate categories.
Reason (R) Intermediate categories are used to make taxonomic positions more informative
(A) A and R both are correct and R is a correct explanation of A
(B) A and R both are correct but R is not a correct explanation of A
(C) A is true and R is false
(D) If both are false
(E) A is false but R is true
