Tim, an adventurer, found three treasure chests in the cave. Only one of the chests contains the treasure. The following clues are written on the three treasure chests respectively:  \textbf{Treasure chest A: "The treasure is not in Treasure chest C!"}  \textbf{Treasure chest B: "The treasure is not here!"}  \textbf{Treasure chest C: "The treasure is here!"}  Given that only one sentence of the above three is true, which chest should Tim open to get the treasure? 
选项为:A:A  B:B  C:C  请回答其中一个选项.