单项选择题

Which of the following contracts is least likely to be traded on an exchange

A.<TABLE border=0 cellSpacing=0 cellPadding=0 width="90%"><TBODY><TR><TD vAlign=top>A. Futures contract. </TD></TR></TBODY></TABLE>
B.<TABLE border=0 cellSpacing=0 cellPadding=0 width="90%"><TBODY><TR><TD vAlign=top>B. Forward commitment. </TD></TR></TBODY></TABLE>
C.<TABLE border=0 cellSpacing=0 cellPadding=0 width="90%"><TBODY><TR><TD vAlign=top>C. Forward contract.</TD></TR></TBODY></TABLE>