What was the PRIMARY reason for President Franklin D. Roosevelt's repeated trips to Georgia?

Responses
A His wife was born in Atlanta and raised in Savannah.His wife was born in Atlanta and raised in Savannah.
B His Vice-President was a native of Pine Mountain, Georgia.His Vice-President was a native of Pine Mountain, Georgia.
C The waters at Warm Springs helped to ease the effects of polio.The waters at Warm Springs helped to ease the effects of polio.
D The coastal area was key to getting his New Deal through Congress.The coastal area was key to getting his New Deal through Congress.

C The waters at Warm Springs helped to ease the effects of polio.