Today , TUAW posted quick review of Briefcase , the latest in a flood of apps for the iPhone that lets you transfer files to and from a PC or Mac and view them on the iPhone . Briefcase is also the only app of this type to allow Wi - Fi file transfer between iPhones . Several competing applications require running special software on the host computer , Briefcase does n't .
Why would one decide to download briefcase ?
Pick the best answer from the following options:
A. If they need to hold items .
B. If they need an app for PC .
C. If they need a running app .
D. If they need to transfer files .


D