What Has Been the Main Criticism of the Biodiversity Treaty

What has been the main criticism of the Biodiversity Treaty?

A) That the treaty has done relatively little to protect biodiversity while making the conduct of basic scientific research much more difficult
B) That the treaty has done relatively little to protect biodiversity while being extremely expensive to implement for all signatories
C) That the treaty has done relatively little to protect biodiversity while being extremely expensive to implement for the poorest signatories
D) That the treaty has had the opposite of the intended effect