Which One of the Following Statements Best Characterizes Working Memory

Which one of the following statements best characterizes working memory (sometimes known as short-term memory) ?

A) It holds information for several hours and includes only things that we know we will need later on.
B) It holds information for only a second or two unless we engage in maintenance rehearsal.
C) It actively processes a small amount of information, typically holding it for less than a minute.
D) It holds processed information for several days or weeks, but probably not forever.