Multi-choice problem: Continue writing the next sentence in this paragraph:

A group of men are in a sandy desert. they

Pick from:
A). climb on top of camels and ride them.;
B). are wearing rafts, and seated in them, they navigate the rough waters of a river.;
C). are paddling through the water, using handgrips and oars.;
D). are parasailing on the sea bed.;
A).