Task: Class Definition Understanding (ontology: Sciences/Biology)

Which of the following definitions best describes 'bkas#30(1-)'?

A. One of the blood groups of the Lewis antigen system
B. Formed following deamidation of asparagine or dehydration of aspartic acid via a metastable succinimide (cyclic imide) intermediate, which hydrolyzes to a mixture of aspartyl and isoaspartyl linkages.
C. Any molecule that consists of at least one carbon atom as part of the electrically neutral entity.
D. Conjugate base of bkas#30

Answer: Conjugate base of bkas#30