Read the following article and answer the question by choosing from the options.

A year ago , however , something happened that made me change my mind about math . My dad is an industrial engineer and a math and science genius . He went to college in the days when the calculator was just starting to take the place of the slide rule . Anyway , he and I went to the U.S. Space and Rocket Center in Huntsville .

Where did the writer and his dad go to ?
Available choices:
[A]. The U.S. Space and Rocket Center in Huntsville.
[B]. None of the above choices ..
[C]. A center for industrial engineers.
[D]. College , in the days when the calculator was just starting to take the place of the slide rule....A:
[A].