The question below consists of a set of labelled sentences. Out of the four options given, select the most logical order of the sentences to form a coherent paragraph.

At length, about an hour later, we

X-spied a little pile of boulders rising
Y-this we dragged ourselves
Z-out of the plain, and to

A

XYZ

B

ZYX

C

XZY

D

ZXY