Who was Matthew Ridgway?

Question

the inventor and five-star general who introduced the use of synthetic oil in the US Army’s motor pool in Korea, saving government funds

a corporal who became lost during an offensive and was marooned deep in North Korea, where he survived for two years living off the land

MacArthur’s replacement who is credited with turning the tide of military action in Korea and promoting desegregation in the US Army

first cousin of Franklin Delano Roosevelt who became the US Army chief of staff under Truman until MacArthur’s firing for insubordination

is it c?
im pretty sure tho