Which sentence has the correct comma placement?
A. Mark Twain was fond of condemning lying by saying “If you tell the truth, you don’t have to remember anything.”
B. Mark Twain was fond of condemning lying by, saying “If you tell the truth, you don’t have to remember anything.”
C. Mark Twain was fond of condemning lying by saying, “If you tell the truth, you don’t have to remember anything.”