How Does the United Nations Convention on the Rights of Persons

How does the United Nations Convention on the Rights of Persons with Disabilities define persons with disabilities?

A) persons with impairments to their body or mind that are a result of a health problem, illness, disease, or abnormality
B) persons with functional limitations and an inability to perform certain tasks
C) persons with a continuum of ability that varies throughout the lifespan and across individual experience
D) persons with long-term physical, mental, intellectual, or sensory impairments which in interaction with various barriers may hinder their equal participation in society