Assertion : Chemotaxonomy is based on comparative cytological studies.
Reason : Lineage can be traced with the help of chromosomal studies.
(a) If both A and R are true and R is the correct explanation of A
(b) If both A and R are true but R is not the correct explanation of A
(c) If A is true but R is false
(d) If both A and R are false.