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". 
Q: [header] How to use relative clauses in the english language [title] Develop a basic understanding of independent clauses to better understand relative clauses. [step] A relative clause is a particular kind of clause. By definition, a clause must have a subject and a verb (if it doesn't, it's called a phrase). <sep> (A) For instance, a simple sentence is made of an independent clause. Meaning a clause that can stand by itself. (B) An independent clause states a fact (if you have a subject) while a verb state a fact (if the subject is something you already have, like a person). When you understand the subject and verb, you can understand how each may interact in the english language. (C) For example, suppose a shrub in a boundary area is covered by a verb, and nobody else is covering it. If nothing else, it is a verb, which means it's a subject to our language. (D) Essentially, a relative clause applies to both types of clauses. [substeps] Read and understand the following grammar rules to help you understand the limitations of an independent clause: " intend to appoint a wizard of endworld'.
A:
A