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 unlock an lg optimus [title] Get the imei code of your phone. [step] Mobile phones, including optimus units, are assigned with special codes called imei (international mobile equipment identity) that are generally used for identification purposes. To get your phone's imei, enter * 06 on your phone using its on-screen keypad. <sep> (A) The imei code will be displayed on the screen; make a note of it. [substeps] You can also check the back of your phone. (B) Once your phone has its imei code, you'll need to print it out. [substeps] You'll also need it to unlock the app. (C) [substeps] As of 2017, the imei code requirement is not greatly listed on the device. [title] Walk away from your device when prompted. (D) For imei codes 5 , 6, and 8, the imei code is 6407.111.xx or 6407.111. [title] Make sure your phone is charged before proceeding.
A:
A