Which command sets read-only access for the user, group, and others on the file named 'note'?

Explanation

Option A adds read permission for group and others but does not affect the user. Option B removes all read and write permissions from all categories. Option C assigns read permission exclusively to user, group, and others, making the file read-only for all. Option D adds read permission for user and group but removes execute permission for others, which does not set read-only for all.