



Let's assume y₂ ≥ y₁. This is wrong; we shouldn't assume that; the question writers did this problem incorrectly. But we'll continue to get the answer they want you to choose.


Answer: A
The real answer is none-of-the-above. It's bad when the teachers who write these questions don't really know what they're doing.
The correct answer is y₂ is ambiguous:
