The mysterious COPY option

What does the /y option do when using COPY at the command line?

A) Copies the files without any attributes

B) Copies the files but does not replace any existing files

C) Copies the files and overwrites existing files without prompting

D) Verifies that the newly copied files have been copied without errors

E) Prompts you to answer “why” you need to copy these files, and if it’s really that important