Task: Question Answering
Input (English): In 1609, Galileo Galilei used lenses to construct the first telescope. His telescope allowed him to observe many objects in space. His invention of the telescope and the data he gathered directly contributed to the understanding that  
 (A) Earth is the center of the universe. (B) the planets revolve around the Sun. (C) all stars eventually explode. (D) the universe has many galaxies.
Output (English): B