Speciation Can Arise Through Abrupt Events, Such as Changes in Chromosome

Speciation can arise through abrupt events, such as changes in chromosome number or as consequence of adaptation to different ecological niches. What is the term for the splitting or Figure A Figure B diverging of a population into two or more species and which figure (above) is best associated with this term?

A) Anagenesis; Figure A.
B) Anagenesis; Figure B.
C) Cladogenesis; Figure A.
D) Cladogenesis; Figure B.
E) Cladogenesis; Both Figure A and B can represent this type of splitting.