The correct answer is A. Article i section 32 of the texas constitution applies to residents of the state of texas while the windsor case applies only to gay and lesbian couples on the federal level.
Through the Windsor case, the United States Supreme Court established that restricting the U.S federal interpretation of "marriage" to apply only opposite-sex couples is unconstitutional. This ruling applies across the nation, while the article i section 32 of the Texas constitution, that limits the definition of marriage to only opposite-sex unions, applies only in Texas.