Which of the following statements are true about Frederick Douglass?

He was an advisor to President Lincoln during the Civil War.
He advocated segregating all the public schools.
He was responsible for writing a famous autobiography.
He was a leader in trying to defeat the abolitionist movement.
He taught himself to read after learning the alphabet

is there only one answer? i can choose more than one answer so i just wanna be clear on the answer if there is one or more answers