Sentence Correction

103. Students in the metropolitan school district lack math skills to such a large degree as to make it difficult to
absorb them into a city economy becoming ever more dependent on information-based industries.
(A) lack math skills to such a large degree as to make it difficult to absorb them into a city economy
becoming
(B) lack math skills to a large enough degree that they will be difficult to absorb into a city's economy that
becomes
(C) lack of math skills is so large as to be difficult to absorb them into a city's economy that becomes
(D) are lacking so much in math skills as to be difficult to absorb into a city's economy becoming
(E) are so lacking in math skills that it will be difficult to absorb them into a city economy becoming



I dont need an answer explanation, I only have a doubt regarding choice E.

Shouldn't choice E say " city's" rather than city ?

"City" can be used as an adjective, as in city government, city hall, etc.