According to the passage, the suitable word which can replace "draw back" is ______.

A．It can make high quality duplicates of prerecorded tapes easily.
B．It can let viewers watch a tape while simultaneously recording off the air.
C．It can duplicate prerecorded movies clearly.
D．Both A andB.

A．Though a face-to-face meeting would cost much in travelling; it is more effective.
B．Many firms only deal impersonally with other firms in order to save money.
C．Good salesmen often bring notebooks along with them and note down
the customers' opinions.
D．Key accounts and prospects are important to all companies.