Marketing Synergies Often Come at the Expense of Product Synergies

Marketing synergies often come at the expense of product synergies because

A) product synergies are more effective for penetrating a market rather than creating one.
B) multiple market segments usually require multiple products.
C) it is easier to change a product than to completely develop a new marketing plan.
D) a single customer segment will likely require a variety of products, each of which must be designed and manufactured.
E) no company can afford to do both at the same time.