In Which One of the Following Market Circumstances Is a Broad

In which one of the following market circumstances is a broad differentiation strategy generally not well suited?

A) when buyer needs and preferences are diverse
B) when few rivals are pursuing a similar differentiation approach
C) when buyers are homogeneous in their needs and preferences,and are generally satisfied with standardized product
D) when there are many ways to differentiate the product or service and many buyers perceive these differences as having value
E) when technological change is fast-paced and competition revolves around rapidly evolving product features