For the past four years, Clifford has gone on the Fourth of July hundred-mile bicycle ride sponsored by the Cyclamates, a local bicycle club.

For the past four years, Clifford has gone on the Fourth of July hundred-mile bicycle ride sponsored by the Cyclamates, a local bicycle club. He has always become too exhausted to finish the entire hundred miles. He reaches the conclusion that he wouldn't be able to finish the whole ride this year and decides to do only the last fifty miles. [M&P]

100% of the items in the sample has the property in question. What's that property?

A. Being 100 miles.

B. Being 50 miles.

C. Being too exhausted to finish.

D. Being a bicycle ride.