Which of the Following Is a Difference Between Paper Memos

Multiple Choice

Which of the following is a difference between paper memos and e-mails?

A) Paper memos have a format different from that of e-mails.
B) Paper memos are always lengthy whereas e-mails are short.
C) Paper memos are informal whereas e-mails are formal.
D) Paper memos have simple responses whereas e-mails do not.
E) Paper memos are sent to external people whereas e-mails are internal.