Task: Question Answering
Input (English): Problem: surface area of a sphere is 2464 cm 2. if its radius is doubled, then the surface area of the new sphere will be
Options: ['a. 4920 cm 2', 'b. 4727 cm 2', 'c. 9856 cm 2', 'd. 19712 cm 2', 'e. none']
Output (English): c