Which of the Following,if True,would Weaken the Senior Manager's Argument

Which of the following,if true,would weaken the senior manager's argument?

A) Producing a stripped-down model would alter high-end domestic customers' view of the Personal Devices brand.
B) A premium auto manufacturer who came out with economy cars suffered in the market.
C) India recently blocked low-priced Chinese phones that did not have the International Mobile Equipment Identification number.
D) Research suggests that the premium market segment is saturated.
E) Even high-end customers typically do not use the advanced functionality in Personal Devices' cell phones.