Technology Such as Cell Phones,laptop Computers,and PDAs Make It Easier

Technology such as cell phones,laptop computers,and PDAs make it easier for salespeople to do their jobs.Why are these technologies also beneficial to the companies the salespeople work for?

A) Proper policies and procedures are easier to follow when everything is automated by communicative technology.
B) Sales managers can more easily monitor the exact whereabouts of their salespeople to ensure that they are not falsifying sales call records.
C) Technology brings the average cost per sales call down for the company while increasing revenue per sale.
D) Salespeople are less likely to quit when they are not required to keep records by hand.
E) Companies do not have to pay for these technologies,as many salespeople already have laptop computers and cell phones of their own.