These were taken last Monday at the beach . No , they were not trying to build a sand castle . They were digging for their own tidal pool since the little man did n't want to get in the water alone and his parents were afraid of the water They spent a good half hour digging two holes . The first was too far from the water and the second got dumped with sand by the coming waves .
What was taken last Monday on the beach ?
Pick the best answer from the following options:
A. Water
B. Children
C. Photos .
D. None of the above choices .


C