13. Ivor writes down the results of the quarter-finals, the semi-finals and the final of a knock-out tournament. The results are (not necessarily in this order): Bart beat Antony, Carl beat Damian, Glen beat Harry, Glen beat Carl, Carl beat Bart, Ed beat Fred and Glen beat Ed. Which pair played in the final?
A Glen and Carl
B Glen and Harry
C Carl and Bart
D Glen and Ed
E Carl and Damian
13. A The pair who play in the final will have played three matches. Only Glen and Carl play three matches so they are the pair who play in the final.