Carlos asks Laura to write down her phone number and e-mail address. He promptly loses the slip of paper. However, he finds that he stills remembers them both. This is possible because ____.
a. of the nature of rehearsal within working memory
b. of the passive nature of storage involved with working memory
c. working memory can manage more than one type of information at a time
d. working memory processes information as visuospatial memories
