For which of the following are $Bentham$ and $Hooker$ remembered?

Which of the following statements are correct about herbarium?

An institution where different types of wild animals are kept in protected environments under human care for public exhibition is known as...

$S$ Statement: Herbaria are generally associated with botanical gardens and educational or research institutions.
$R$ Reason: $A$ botanical garden is a planned collection of trees,shrubs,herbs,climbers,and other living plants brought from different parts of the world for scientific purposes.
$(a)$ Both $S$ and $R$ are true,and $R$ is the correct explanation of $S$.
$(b)$ Both $S$ and $R$ are true,but $R$ is not the correct explanation of $S$.
$(c)$ $S$ is true and $R$ is false.
$(d)$ $S$ is false and $R$ is true.

Describe other means of recording descriptions.

What is the full form of $IABG$?