Given the task definition and input, reply with output. You are given a question or fill-in-the-blank question, two answer options (Option1 and Option2) and an Explanation. Your task is to find the correct answer (return the string of the correct option, not option1/2) for the given question from the given options and using explanation.

Question: We are designing a submarine to study fish that live far below the surface of the ocean. Before we can send a human researcher down in the submarine, we have to be sure it can tolerate the pressure of the water without cracking. The easier test will be to send our submarine down to
Option1: 500 feet or
Option2: 1500 feet?
Explanation: A fluid exerts pressure in all directions, but the pressure is greater at greater depth.
500 feet or