A Major Limitation in the Use of Internal R&D Departments

A major limitation in the use of internal R&D departments for new idea generation is

A) the natural conflict R&D has with adhering to the firm's mission.
B) that R&D departments tend to be dissolved once sufficient ideas have been generated.
C) that the bureaucracy associated with R&D departments limits the generation of ideas.
D) that R&D scientists develop ideas that are impractical to produce.
E) the costs associated with an internal R&D department tend to be quite high.