Which base would not effectively deprotonate acetylene? (ch3) 2nli ch3och2mgbr lioch3 ch3li kh?

Acetylene has a chemical formula which can be written as:

C2H2

We can see that there are two positive ions, H+. Now what deprotonation means is that the H + is removed from acetylene to form acetylene ion and water. In this case, I believe that the answer would be:

LiOCH3