1. Marketing researchers have found that, because many residents of the Southeast do not share the same ethnic heritage as Northeasterners, the two varieties of commercially prepared coleslaw most popular in New York City and Boston are virtually ignored by consumers in Richmond and Raleigh.

(A) because many residents of the Southeast do not share the same ethnic heritage as

(B) because many residents of the Southeast do not share the same ethnic heritage with

(C) because many residents of the Southeast do not have the same ethnic heritage as

(D) due to many residents of the Southeast not sharing the same ethnic heritage with（C）

(E) whereas many residents of the Southeast do not share the same ethnic heritage as

C最后不应该加do吗？