Abraham Has Been in Prison Since 1940

Abraham has been in prison since 1940. He is now 86 years old. Throughout his time in prison, he has seen changes in the prison, the type of inmates being housed, and the laws concerning inmates. When he first got to prison, it was generally accepted that a convicted individual forfeited all rights that were not granted in a statute or a correctional policy. Abraham filed a lawsuit against the administrators of his prison because he was Muslim and the warden prohibited him from access to the Koran and from conducting services. What amendment was the basis for Abraham's lawsuit?

A) First Amendment
B) Second Amendment
C) Fourth Amendment
D) Eighth Amendment