Why did the team of 10 Americans had a goal of making history
A．Because it is the first team that topped Mt. Everest.
B．Because all of the members of the team are blind men except Erik Weihenmeyer.
C．Because one of its members is Erik Weihenmeyer, who hopes to become the first blind man to clearthe famed Mt. Everest.
D．Because all of the members of the team are old men who are eager to climb the famed peak.