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 use memes on facebook [title] Log into your facebook account. [step] Go to facebook, and if you're not logged in yet, enter your registered email address, or username, and password in the top right fields. Click " log in " to continue. <sep> (A) [title] See all the memes in the top left section. [step] The memes you want to edit are listed below. (B) [title] Use the appropriate heading to search for memes. [step] In the upper-right corner of the page, you'll see a drop-down menu. (C) [title] Click the update status box at the top of the page. [step] There's an update status box at the top of your facebook news feed and timeline. (D) [substeps] If you haven't signed in yet, you'll need to give the sign in process a shot. Click the " sign in " button in the upper-right corner of the screen.
[A]: C


[Q]: [header] How to feed a warm season lawn [title] Take a soil sample of your lawn. [step] A soil sample will give you an evaluation of the nutrients and determine what amendments or fertilizers will work best for your lawn. To take a sample, use a gardening spade and dig 5 holes that are 6-8 inches (15-20 cm) deep in several areas of your lawn. <sep> (A) [substeps] Avoid digging any deeper than the hole you are taking your soil sample from. Digging 4 holes too deep, or too small, could cut off the nutrients your soil provides for its root system, which could cause your grass to die. (B) Put the soil that you unearthed in a clear container and send it to your nearest cooperative extension. [substeps] You can take samples of your soil annually to keep up with the changes in nutrient content. (C) If the holes are shallow, use a flashlight or electronic device to locate the depth on the soil. [substeps] You can purchase soil samples at most major gardening and home improvement stores. (D) [substeps] Be careful, as you could trip on a garden hose and injure yourself. You can disinfect the soil during use by using two or three levels of bleach to dissolve it, then repump if necessary.
[A]: B


[Q]: [header] How to look younger at 50 [title] Exercise. [step] Exercise is important at all ages, but it can be especially helpful once you reach your 50s. Include both cardiovascular and strength exercises in your routine. <sep> (A) [substeps] At least five days of exercise each week requires 30 minutes of moderate activity. [title] Come up with a form for your looks. (B) Great ways to exercise are by : [substeps] Doing cardio in the morning and at night. Not only will it help you get back into shape, but it will also make time to expend energy towards stretching on the weekends, or in the late evening. (C) Cardiovascular exercise gets your blood pumping and strength exercises can tone flabby skin associated with age. [substeps] Improved circulation supplies more nutrients and oxygen to your skin. (D) These will help you stay fit throughout the day and will provide enough energy to live your life. They can also help you find older body pictures of yourself and create a good as new body-image image! [substeps] Try to find a gym that has a bigger gym area than your home.
[A]:
C