Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that is CLOSEST in meaning to each of the following sentences  The man is old, so he can't take a long trip.

The man can't take a long trip because he is old.

The man isn't old so that he can take a long trip.

The man is old, but he can't take a long trip.

The man is old enough to take such a long trip.