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". 

[header] How to sync your fitbit data with your lose it! App [title] Go to lose it! [step] Create a new browser tab and open the lose it! Website at. [title] Sign in. [step] Click the " sign in " button at the top-right corner of the website to go to the login page. <sep> (A) Input your valid username and password and click " log in " to continue. [substeps] You will be asked to provide your gender, birthdate, birthday, and mailing address. (B) Your username and password are now shared with your fitbit account through a special link below your profile picture. Click " sign in " to create a new password. (C) Enter your email address and password to log in. [substeps] You can find the email address and password required here: https: // www.fitbit.com /. (D) Enter your lose it! Account credentials on the text areas provided and tap the " sign in " button to log in. [substeps] If you don't have a lose it! Account yet, click the " create one now " link to get your login details.
D

[header] How to study the phenomenon of light as a nonequilbirum state of matter [title] Understand how thermodynamic systems are categorized. [step] Thermodynamic systems in nature are divided into two types. One is systems that are at equilibrium state with the environment and the other is systems that are in a state of nonequilibrium with the surroundings. <sep> (A) On earth, nature has a preference for systems that are at an equilibrium state with the surrounding. This is so due to the principle of minimum energy that every object in the universe aspires to have. (B) For example, gas rising in temperature throughout the day can be divided into microorganisms in the environment. [substeps] For example, gas rising in temperature in the atmosphere can be divided into molecules in the environment. (C) [substeps] Equilibrium is fundamental in thermodynamics. Other systems include stars, planets, and oceans. (D) [title] Learn about the term " rock hydrodynamics ". [step] Rock hydrodynamics refers to the transfer of water to the earth's surface.
A

[header] How to find a lost ipod [title] Understand the requirements. [step] You can use apple's location tracking service, " find my ipod ", on the ipod touch 3rd generation and newer. You must also be running ios 5 or newer. <sep> (A) [title] Open ios 8 on your iphone or ipad. [step] If you're mobile, you can log in with your apple id, and keep your device out of view to physically scan data if you no longer have an ios 4 or older. (B) You must also be a windows mobile phone model/user. [title] Search for a second ipod by clicking the icons below the introduction. (C) [substeps] Your computer library will instantly open, keeping all the data you have from your lost ipod on the desktop. Your usb memory will immediately be transferred to your ipod touch. (D) Find my ipod will not work on ipod shuffle, nano, or classic. [substeps] Find my ipod needs to be enabled before it can work.

D