Select the correct text in the passage.
Which detail in the cyclists' dialogue refines the idea that they might be related?

(19) "This is confusing," he remarked in a tone of argument. "Let's sit down and have a pipe over it--we shall have to differentiate ourselves before we start out into the world together."...

(20) "Let's differentiate our names somehow," said the pleasant-voiced one lazily--"Did your godfathers, etc., do anything more for you than Edward--mine didn't."

(21) The other shook his head. Something in his handsome face had already differentiated itself from the amused curiosity on his companion's.

(22) "That's awkward--we shall be driven to abbreviations. You shall be Ted, and I Ned--both dentals but philologically uninterchangeable; so they'll do for the present. Well, Ted, since you are twenty-seven and I'm gone twenty-nine, and my father died before I was born, we can't be complicated up as long--lost brothers--can we?"

(23) Ted turned to him frowning sharply--"No! but--but what put that into your head. I----"