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 make homemade hormone rooting powder or tonic [title] Use cinnamon. [step] Cinnamon prevents the growth of fungus. While it acts less as a rooting hormone, the fact that it curbs the fungal growth means that the plants have a great chance to grow without needing any additional help. <sep> (A) [substeps] Consider adding cinnamon powder to your herbal tonic each day by mixing small cinnamon cubes with water and using them for a week. [title] Try using flakes of dried marigolds. (B) [title] Try a silicon tablet or cacao tablet. [step] They can last up to a week, but commercially available forms are fast-acting. (C) [title] Dip or roll the cutting in ground cinnamon. [substeps] If dipping, tip some cinnamon into a cup and simply dip the cut stem end into the cinnamon. (D) Make sure that you use cinnamon in conjunction with regular root growth products, as cinnamon provides an excellent additive that can help regulate the risk of fungal infections. [substeps] Make sure that you use cinnamon on plants that are not affected by herbaceous or fungal infections.
[A]: C


[Q]: An athlete practices tossing a javelin in a track a field course. The athlete starts with two or three side steps and then proceeds to toss the javelin. the athlete <sep> (A) then increases his speed and steps. (B) runs parallel to the chalk and throws four instructions that lead into a discus throw, where he throws the javelin as far as he can into the distance. (C) then does a backswing outside of the track. (D) throws the javelin to the other side and then back to the field.
[A]: A


[Q]: [header] How to use a light meter [title] Prepare your camera. [step] Go into the settings of your camera and set it to manual mode, if it isn't in that mode already. Set your camera to your preferred iso and aperture settings. <sep> (A) Find the switch that goes on the back of the camera but don't worry about manually pressing it. Right now use the focal control or opacity control. (B) Make sure that you are connected to a recording device for an iso service. [substeps] You will not know if the device will sound when it has been activated until you press the right arrow (below the camera logo on the top right corner of your device) or use the analog camera led to turn off the device. (C) You'll need to do some experimenting with both of these settings to find the ideal settings for the photo you're trying to get. [substeps] The iso setting determines your camera's sensitivity to light. (D) [substeps] These settings are usually located at the bottom of the camera's box. If you haven't taken a picture or two before, you can adjust them now by turning on switch zoom up, switch aperture down and transparent sensitivity mode.
[A]:
C