18) Which of the following is an example of an effective subject line for an email requesting information about an upcoming staff meeting? A) Information needed B) Meeting attendance is compulsory C) Please send staff meeting agenda D) Do I need to attend? 19) Compared to email, instant messaging A) is slower and more complicated to use. B) has not caught on in the business community. C) is much faster, but more costly as well. D) is able to mimic conversation more closely. 20) Drawbacks of IM include the A) challenge of logging messages for later review and archiving. B) need for users to learn complicated software. C) ability to use it only on expensive, highly specialized devices. D) need to learn how to use complicated hardware.