Which of the following groups of mammals exhibits the greatest diversity in terms of the number of genera and species?

Given below are pie diagrams $I$,$II$ and $III$ related to the proportionate number of species of major taxa of invertebrates,vertebrates and plants respectively. Critically study and fill in the blanks $A, B, C$ and $D$.

Select the correct option regarding species diversity.

Match the following taxonomic groups with their approximate species proportion:

Column-$A$ (Taxonomic Group)	Column-$B$ (Proportion of total species)
$A$. Animals	$1$. More than $70\%$
$B$. Plants	$2$. Around $22\%$
$C$. Insects	$3$. More than $70\%$ of total animals
$D$. Fungi	$4$. More than combined fish,amphibians,reptiles $\&$ mammals

The total number of biodiversity hotspots in the world is

The ................ have a greater amphibian species diversity than the .......