Task: Question Answering
Input (English): Most stars in the Milky Way are like the Sun. The Sun will eventually become a red giant. After the red giant stage, what determines whether a star will become a white dwarf or a supernova?  
 (A) the mass of the star (B) the diameter of the star (C) the brightness of the star (D) the type of gas in the star
Output (English): A