Who was the wife of the president whose legacy lives on through a famous landmark on the colorado river?

In first place, the President whose legacy lives on through a famous landmark on the Colorado River was Herbert Hoover, because from 1931 until 1936 during the Great Depression was built a dam located in the path of the Colorado River in honour to the 31° president Herbert Clark Hoover; And his wife was Lou Henry Hoover, who was born on March 29, 1874 in Waterloo, Iowa, and they get married on February 10, 1899 in San Francisco, California.

a and c?

i think it is a and c

hello,

your answer whould be d