Which of the following scenarios qualifies as strategic philanthropy in a competitive context social dimension?

a$.$ A community giving nonprofit funds to a water treatment facility in a foreign developing country.

b$.$ An international coffee supply company donates money to struggling entrepreneurs who open new restaurants in a major city.

c$.$ A credit card company gives money to a nonprofit that donates used medical supplies to international groups.

d$.$ A hedge fund manager donates some of the employees$$ time to tutor elementary school children at a local public school.