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

Which of the following definitions best describes 'alpha-D-Man-(1->3)-[alpha-D-Man-(1->6)]-beta-D-Man-(1->4)-beta-D-GlcNAc-(1->4)-D-GlcNAc(PP-Dol)(2-)'?

A. The dolichyl diphosphooligosaccharide(2-) species that is the dianion formed by loss of protons from the diphospho linkage in alpha-D-Man-(1->2)-alpha-D-Man-(1->2)-alpha-D-Man-(1->3)-[alpha-D-Man-(1->6)]-beta-D-Man-(1->4)-beta-D-GlcNAc-(1->4)-D-GlcNAc(PP-Dol); major microspecies at pH 7.3.
B. The dolichyl diphosphooligosaccharide(2-) species that is the dianion formed by loss of protons from the diphospho linkage in alpha-D-Man-(1->3)-[alpha-D-Man-(1->6)]-beta-D-Man-(1->4)-beta-D-GlcNAc-(1->4)-D-GlcNAc(PP-Dol); major microspecies at pH 7.3.
C. The dolichyl diphosphooligosaccharide(2-) species that is the dianion formed by loss of protons from the diphospho linkage in alpha-D-Man-(1->2)-alpha-D-Man-(1->2)-alpha-D-Man-(1->3)-[alpha-D-Man-(1->3)-alpha-D-Man-(1->6)]-beta-D-Man-(1->4)-beta-D-GlcNAc-(1->4)-D-GlcNAc(PP-Dol); major microspecies at pH 7.3.
D. The dolichyl diphosphooligosaccharide(2-) species that is the dianion formed by loss of protons from the diphospho linkage in alpha-D-Man-(1->2)-alpha-D-Man-(1->2)-alpha-D-Man-(1->3)-[alpha-D-Man-(1->2)-alpha-D-Man-(1->3)-[alpha-D-Man-(1->2)-alpha-D-Man-(1->6)]-alpha-D-Man-(1->6)]-beta-D-Man-(1->4)-beta-D-GlcNAc-(1->4)-D-GlcNAc(PP-Dol); major microspecies at pH 7.3.

Answer: The dolichyl diphosphooligosaccharide(2-) species that is the dianion formed by loss of protons from the diphospho linkage in alpha-D-Man-(1->3)-[alpha-D-Man-(1->6)]-beta-D-Man-(1->4)-beta-D-GlcNAc-(1->4)-D-GlcNAc(PP-Dol); major microspecies at pH 7.3.