In a press conference given last week, the Mills Company spokesman explained that
although other machines are cheaper, the competitor's product costs twice as much as
maintaining the new Mills' machine.
A. the competitor's product costs twice as much as maintaining the new Mills'
machine
B. the competitor's product costs twice as much to maintain as the new Mills'
machine
C. maintaining the competitor's product costs twice as much as the new Mills'
machine does
D. maintaining the competitor's product costs twice as much as it does for
maintaining the new Mills' machine
E. to maintain the competitor's product costs twice as much as for the new Mills'
machine