challenge: What is the systematic name of the Malonyl-CoA O-methyltransferase enzyme?
  
  A. S-adenosyl-L-methionine:succinyl-CoA O-methyltransferase
  B. S-adenosyl-L-methionine:malonyl-CoA O-methyltransferase
  C. S-adenosyl-L-methionine:acetyl-CoA O-methyltransferase
  D. S-adenosyl-L-methionine:formyl-CoA O-methyltransferase
  Answer: 