Which of these lists the qualifications for U.S. Senate as described in Article I of the Constitution?

A.) at least 25 years old, at least seven years a U.S. citizen, and a resident of the state chosen to represent
B.) at least 25 years old, at least nine years a U.S. citizen, and a resident of the state chosen to represent
C.) at least 30 years old, at least seven years a U.S. citizen, and a resident of the state chosen to represent
D.) at least 30 years old, at least nine years a U.S. citizen, and a resident of the state chosen to represent