Given below are four jumbled sentences. Select the option that gives their correct order forming a meaningful and coherent paragraph.

A. Mohenjo Daro is an ancient civilization in the heart of Pakistan that cropped up on the Indus river 4,500 years ago.

B. It was discovered in the 1920s after mysteriously disappearing 4,000 years ago, according to National Geographic.

C. The immaculately planned city, with endless rows of baked brick walls, was considered the "first great urban center" of the Indus Valley civilization and had complex drainage systems to address ancient floods.

D. Remnants of the city include bronze statues, pottery and a pool called the Great Bath.