challenge: What is the systematic name of the enzyme Glycine N-phenylacetyltransferase?
  
  A. Phenylacetyl-CoA:glycine N-phenylacetyltransferase
  B. Phenylacetyl-CoA:alanine N-phenylacetyltransferase
  C. Phenylacetyl-CoA:tyrosine N-phenylacetyltransferase
  D. Phenylacetyl-CoA:serine N-phenylacetyltransferase
  Answer: 