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".
Problem:[header] How to hang a gate [title] Dig a hole at least 3 feet (or 1 meter) deep using a post hole digger. [title] Place one of the posts into its hole and while holding it as level as you can, pour dry concrete into the hole until it is half filled. [title] Pour in roughly 5 inches (or 12. 7 centimeters) of water and let the mix soak for a minute or two. <sep> (A) [title] Fill the hole to about 5 inches (or 12. 7 centimeters) from the top with more of the dry mix, adding another 5 inches (or 12. (B) [title] Properly suspend the gate into the hole and allow it to soak. [title] Check the gate's plastic surface for rot and discoloration. (C) [title] Add some more warm water and continue to drip concrete into the hole. [title] Pour out the water and then connect to another post. (D) [title] Pour another post hole that is slightly shallower. [step] Set your gate into its hole [title] Fill the other hole with the loose concrete and sand.
Solution:
A