Criteria for Forming Segments Involve Both Similarities and Differences

Criteria for forming segments involve both similarities and differences. Which of the following statements is most accurate?

A) Within a segment, the needs of potential buyers should be different; among segments, the needs of buyers should be similar.
B) Within a segment, the needs of potential buyers should be similar; among segments, the needs of buyers should be different.
C) The needs of buyers should be different, both between segments and within segments.
D) The needs of buyers should be the same, both between segments and within segments.
E) If there are any differences at all, you should forgo any segmentation.