Opponents of the High Cost of Specialty Drugs Cite All

Opponents of the high cost of specialty drugs cite all of the following reasons except one for their opposition the high cost. Which is the exception?

A) Lack of transparency when it comes to the true cost of developing specialty drugs
B) Specialty drug manufacturers charge high price for them because there is large market for specialty drugs
C) Taxpayers already subsidize about half of company research costs through credits and deducted that are granted to drug companies
D) In reality, no accurate estimate exists because the cost of new discovery varies considerably