In which of the following sentences from Into the Wild is the author's tone evident?
A.
Four Anasazi pots were carefully arranged on a rock nearby.
B.
Just upstream from where Davis Creek flows into Lake Powell, a natural ramp zigzags down from the canyon's west rim.
C.
An extensive search shed no light on his whereabouts.
D.
Also like McCandless, Ruess was undeterred by physical discomfort; at times he seemed to welcome it.