Given below are four jumbled sentences. Select the option that gives their correct order.

A. So desert animals have had to find different ways of coping with the harsh conditions.

B. For example, gerbils spend the hottest part of the day in cool underground burrows.

C. And strange insects called darkling beetles are experts at catching drops of moisture through their legs.

D. Deserts are the driest places on earth and sometimes go for months, or even years, without rain.