TASK DEFINITION: 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". 
PROBLEM: [header] How to get oil out of hair [title] Shampoo your hair several times. [step] Use your regular shampoo to wash your hair in the shower. Really work the shampoo into your scalp using your fingers and rinse it out thoroughly with lukewarm water. <sep> (A) Rinse your hair as soon as possible after it is done, as prolonged washing can hurt the scalp. [title] Dry your hair as soon as possible. (B) Have a good conditioner available on hand for long-term use. [substeps] Because oil can build up if you're not getting it regular, don't rinse it out very often, as this may clog or unbalance the hair follicles. (C) Repeat the process one or two more times, as needed. [substeps] After you finish shampooing, add some conditioner to your hair and let it sit for 5 minutes before rinsing out. (D) [substeps] You can use a hairdryer, a microfiber cloth, or a shower cap to gently detangle your hair to avoid spreading the oil or holding your hair in. [title] Squeeze a dime-sized amount of shampoo from a bottle.

SOLUTION: C

PROBLEM: A man is standing in the snow. he <sep> (A) is holding a large shovel. (B) is in an area filled with trees, and he is being held up by another man. (C) grabs a scoop and shovels it out. (D) is holding on to a rope attached to a machine.

SOLUTION: A

PROBLEM: A marching band is in the midle o street. Behind the marching band a fire truck is in the parade. people on sidewalks <sep> (A) are watching the parade. (B) are in the street. (C) and campodes dodge the fire trucks. (D) and sidewalks gather and get ready to start a sidewalk fire.

SOLUTION:
A