Use of electronic mail (e-mail) has been widespread for more than a decade.E-mail simplifies the flow of ideas, connects people from distant offices, eliminates the need for meetings, and often boosts productivity.However,e-mail should be carefully managed to avoid unclear and inappropriate communication. E-mail messages should be concise and limited to one topic.When complex issues need to be addressed,phone calls are still best.The main idea of the paragraph is that e-mail
A.
is not always the easiest way to connect people from distant offices.
B.
has changed considerably since it first began a decade ago.
C.
causes people to be unproductive when it is used incorrectly.
D.
is effective for certain kinds of messages but only if managed wisely.