Subject Lines in E-Mails Messages Are

Subject lines in e-mails messages are

A) Even more important than those in letters and memos because it's so easy for the reader to hit the delete key.
B) Even more important than those in letters and memos because anti-virus software may screen the messages out.
C) Less important than those in letters and memos because people will look to the address of the sender to decide whether to read the message.
D) Less important than those in letters and memos because few people pay attention to subject lines because they are so busy.
E) None of the above.