Sentence Correction

Researchers in Germany have unearthed 400,000-year-old wooden spears from what it appears was an ancient lake shore hunting ground as stunning evidence of human ancestors who systematically hunted big game much earlier than believed.

A. it appears was an ancient lake shore hunting ground as stunning evidence of human ancestors who

B. it appears had been an ancient lake shore hunting ground and stunning evidence that human ancestors

C. appears was an ancient lake shore hunting ground and is stunning evidence that human ancestors

D. appears to be an ancient lake shore hunting ground, stunning evidence that human ancestors

E. appears that it is an ancient lake shore hunting ground, stunning evidence of human ancestors who

My Answer is D - it not only makes perfect sense but comma after the stunning ground seprates two seprates very clearly.

OA please

(D) for me.