Task: Question Answering
Input (English): Question: The two lines y = x and x = -4 intersect on the coordinate plane. If z represents the area of the figure formed by the intersecting lines and the x-axis, what is the side length E of a cube whose surface area is equal to 6z?

 Option A: E=16

 Option B: E=8√2

 Option C: E=8

 Option D: E=2√2

 Option E: (√2
Output (English): Option D