Assertions: Small numbers of surviving tigers a cause of worry from the point of view of genetics.
Reasons: The experiences of an individual during its lifetime cannot be passed on to its progeny and cannot direct evolution.
a) Both A and R are true, and R is correct explanation of the assertion.
b) Both A and R are true, but R is not the correct explanation of the assertion.
c) A is true, but R is false.
d) A is false, but R is true.