Detailed Instructions: In this task, you are given a context and four options. Each option is a suggested ending for the context. You should read the context and pick the best ending for the context. Please answer with "A", "B", "C", and "D".
Q: [header] How to install an egress window [title] Find out how large your egress window needs to be. [step] Requirements vary based on where you live, so look up local codes on the subject. It will likely need to be about 6 square feet (1.8 meters), and the bottom of the window opening will need to be no more than 44 inches (1.1 meters) off the floor. <sep> (A) [title] Consider a window that cannot be accessed from the outside. [step] An indoor window is much safer than a window that cannot be accessed with wire or a hose, and will usually be held by window guards. (B) [substeps] If you own a garage, the next step is to check for any obvious obstructions, including crushed concrete. [title] Order an egress window from your local hardware store. (C) [title] Measure and mark your cut on the inside wall of your basement with a grease pencil. [title] Build a temporary support frame inside the basement. (D) [title] Use an arm hook for further control. [step] This arm hook is far more powerful than a bat hook, as it will be attached to the wall when you open the window, and moves fast.
A:
C