SC大全SECTION-B-17探讨 请教

cdgmat

During the first nine months of 1979, textbook publishers incurred substantial costs for creating products that, due to a decline in public funding for instructional material, never were sold.
(A) funding for instructional material, never were
SECTION B 431
http://www.chasedream.com/ by Gemj
(B) funding for instructional material, never was
(C) funding, the instructional material, was never
(D) funding for instructional material, the products were never
(E) funding, they were never

why A is right?Never will be a subject in the clause?

Any explaination will be highly appreciated!

dtstruggle

考点：谓语的单复数

提干：textbook publishers incurred substantial costs for creating products that never be sold

sold前面的be动词是products的谓语，所以必须用复数

BC排除

DE选项中的 the products were never/they were never有了主语和谓语，单独成句，那么题目中的前半段则没有谓语。错

选A