Is the Primary Disadvantage of Employing a Selective Specialization Strategy

is the primary disadvantage of employing a selective specialization strategy?

A) Gaining market distribution will be costly.
B) The organization may be spread too thin.
C) The organization achieves neither marketing nor manufacturing synergies.
D) R&D-manufacturing has the difficulty of producing multiple new lines.
E) It is too risky for a company to "put all its eggs in one basket."