Since GE reached their end of quarter goals for sales of new turbines, GE directors have stopped questioning the bold new design changes recently incorporated in the new turbine. Directors argue that the new turbine has been bought by all major engine manufacturers
, so these design changes must be worth the incremental costs. However, major engine manufacturers always purchase any new engine design for evaluation
. The mere initial purchase is not a guarantee that they will use the design in their products.
In the above argument, the two bold face portions play which of the following roles?
A. The first is evidence to support a conclusion; the second is a reason for questioning that support.
B. The first is evidence to support a conclusion; the second provides another conclusion which is the main conclusion for the passage.
C. The first is a position taken by GE directors; the second is a position taken by the author of the argument.
D. The first is the evidence used to support a conclusion; the second is the position taken by the author of the argument.
E. The first and second are opposing premises, both of which cannot be true simultaneously.