Both disabled and non-disabled people can contribute to our community by doing voluntary work

A. Doing voluntary work can make contribution to our community by both disabled and non-disabled people.

B. Either disabled or non-disabled people can make voluntary contribution to our community.

C. Not only disabled people but also non-disabled ones can contribute to our community by doing voluntary work.

D. With voluntary work, our community can contribute a lot thanks to both disabled and non-disabled people.