$\alpha$ -Diversity And $\beta$ -Diversity Differ in the Following Way

$\alpha$ -diversity and $\beta$ -diversity differ in the following way.

A) One means high-level diversity while the other means low-level diversity.
B) One refers to a community that has many abundant species and the other refers to a community that has many rare species.
C) One refers to diversity within a location and one refers to diversity between locations.
D) One measures the number of different species while the other takes into account the number within each species.
E) One refers to natural diversity and one refers to diversity in communities that have been heavily influenced by humans.