Island Biogeography Predicts That a Single Large Area Would Have

Island biogeography predicts that a single large area would have higher biodiversity than several small areas.However,in practice,several small areas could have an advantage for what reason(s) ? Check all that apply.

A) Facilitating the spread of disease
B) Decreasing extinction risk from natural disasters
C) Being less expensive
D) Containing more habitat types
E) Minimizing edge effects