Sentence Correction (SC) | Re: In early Mesopotamian civilization, castor oil served not only as a la

In early Mesopotamian civilization, castor oil servednot only as a laxative, but also a skin-softening lotion and it was a construction lubricant for sliding giant stone blocks over wooden rollers.

A.not only as a laxative, but also a skin-softening lotion and it was a construction
B.as not only a laxative, but also a skin-softening lotion, and it was a construction
C.not only as a laxative