GMAT Sentence Correction (SC) | Re: Downzoning, zoning that typically results in the reduction

Downzoning, zoning that typically results in the reduction of housing density, allows for more open space in areas wherelittle water or services exist .

(A) little water or services exist - little can't be used for services , services is countable noun
(B) little water or services exists - little can't be used for services ; Subject-verb agreement issue - singular exists and plural services
(C) few services and little water exists - Subject-verb agreement issue
(D) there is little water or
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