Task: Question Answering
Input (English): Question: In the coordinate plane, points (x, 1) and (10, y) are on line k. If line k passes through the origin and has slope 1/3, then x + y =

 Option A:  4.5

 Option B:  7

 Option C:  8

 Option D:  19/3

 Option E:  12
Output (English): Option D